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lyear_utilities_spacing.html

<!DOCTYPE html>
<html lang="zh">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimal-ui">
<meta name="keywords" content="LightYear,LightYearAdmin,光年,后台模板,后台管理系统,光年HTML模板">
<meta name="description" content="Light Year Admin V5是一个基于Bootstrap v5.1.3的后台管理系统的HTML模板。">
<title>边距 - 光年(Light Year Admin V5)后台管理系统模板</title>
<link rel="shortcut icon" type="image/x-icon" href="favicon.ico">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-touch-fullscreen" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="default">
<link rel="stylesheet" type="text/css" href="css/materialdesignicons.min.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="css/style.min.css">
</head>

<body>
<!--页面loading-->
<div id="lyear-preloader" class="loading">
  <div class="ctn-preloader">
    <div class="round_spinner">
      <div class="spinner"></div>
      <img src="images/loading-logo.png" alt="">
    </div>
  </div>
</div>
<!--页面loading end-->
<div class="lyear-layout-web">
  <div class="lyear-layout-container">
    <!--左侧导航-->
    <aside class="lyear-layout-sidebar">

      <!-- logo -->
      <div id="logo" class="sidebar-header">
        <a href="index.html"><img src="images/logo-sidebar.png" title="LightYear" alt="LightYear" /></a>
      </div>
      <div class="lyear-layout-sidebar-info lyear-scroll">

        <nav class="sidebar-main">

          <ul class="nav-drawer">
            <li class="nav-item">
              <a href="index.html">
                <i class="mdi mdi-home-city-outline"></i>
                <span>后台首页</span>
              </a>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-television-guide"></i>
                <span>布局</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_layout_break_point.html">拐点</a> </li>
                <li> <a href="lyear_layout_containers.html">容器</a> </li>
                <li> <a href="lyear_layout_grid.html">栅格</a> </li>
                <li> <a href="lyear_layout_columns.html">列</a> </li>
                <li> <a href="lyear_layout_gutters.html">沟槽</a> </li>
                <li> <a href="lyear_layout_utilities.html">实用程序</a> </li>
                <li> <a href="lyear_layout_zindex.html">Z-index</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-silo"></i>
                <span>页面内容</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_content_typography.html">排版</a> </li>
                <li> <a href="lyear_content_images.html">图片</a> </li>
                <li> <a href="lyear_content_tables.html">表格</a> </li>
                <li> <a href="lyear_content_figures.html">画像</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-map-outline"></i>
                <span>表单</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_forms_overview.html">概述</a> </li>
                <li> <a href="lyear_forms_control.html">表单控件</a> </li>
                <li> <a href="lyear_forms_select.html">下拉选择</a> </li>
                <li> <a href="lyear_forms_radio.html">单选框</a> </li>
                <li> <a href="lyear_forms_checkbox.html">复选框</a> </li>
                <li> <a href="lyear_forms_switch.html">开关</a> </li>
                <li> <a href="lyear_forms_range.html">范围</a> </li>
                <li> <a href="lyear_forms_input_group.html">输入组</a> </li>
                <li> <a href="lyear_forms_floating_labels.html">浮动标签</a> </li>
                <li> <a href="lyear_forms_layout.html">布局</a> </li>
                <li> <a href="lyear_forms_validation.html">验证</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-tune"></i>
                <span>组件</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_components_accordion.html">手风琴菜单</a> </li>
                <li> <a href="lyear_components_alerts.html">警告框</a> </li>
                <li> <a href="lyear_components_badge.html">徽章</a> </li>
                <li> <a href="lyear_components_breadcrumb.html">面包屑导航</a> </li>
                <li> <a href="lyear_components_buttons.html">按钮</a> </li>
                <li> <a href="lyear_components_button_group.html">按钮组</a> </li>
                <li> <a href="lyear_components_card.html">卡片</a> </li>
                <li> <a href="lyear_components_carousel.html">轮播</a> </li>
                <li> <a href="lyear_components_close_button.html">关闭按钮</a> </li>
                <li> <a href="lyear_components_collapse.html">折叠</a> </li>
                <li> <a href="lyear_components_dropdowns.html">下拉菜单</a> </li>
                <li> <a href="lyear_components_list_group.html">列表组</a> </li>
                <li> <a href="lyear_components_modal.html">模态框</a> </li>
                <li> <a href="lyear_components_navs_tabs.html">导航 &amp; 标签页</a> </li>
                <li> <a href="lyear_components_navbar.html">导航栏</a> </li>
                <li> <a href="lyear_components_offcanvas.html">滑动容器</a> </li>
                <li> <a href="lyear_components_pagination.html">分页</a> </li>
                <li> <a href="lyear_components_placeholders.html">占位符</a> </li>
                <li> <a href="lyear_components_popovers.html">POP提示</a> </li>
                <li> <a href="lyear_components_progress.html">进度条</a> </li>
                <li> <a href="lyear_components_scrollspy.html">滚动监听</a> </li>
                <li> <a href="lyear_components_spinners.html">加载状态</a> </li>
                <li> <a href="lyear_components_toasts.html">通知消息</a> </li>
                <li> <a href="lyear_components_tooltips.html">工具提示</a> </li>
                <li> <a href="lyear_components_other.html">其他</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-card-bulleted-outline"></i>
                <span>助手</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_helpers_clearfix.html">清除浮动</a> </li>
                <li> <a href="lyear_helpers_colored_links.html">彩色链接</a> </li>
                <li> <a href="lyear_helpers_ratio.html">比例</a> </li>
                <li> <a href="lyear_helpers_position.html">定位</a> </li>
                <li> <a href="lyear_helpers_stacks.html">堆叠</a> </li>
                <li> <a href="lyear_helpers_visually_hidden.html">视觉隐藏</a> </li>
                <li> <a href="lyear_helpers_stretched_link.html">延伸链接</a> </li>
                <li> <a href="lyear_helpers_text_truncation.html">文本截断</a> </li>
                <li> <a href="lyear_helpers_vertical_rule.html">垂直法则</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav active open">
              <a href="javascript:void(0)">
                <i class="mdi mdi-map-search-outline"></i>
                <span>工具类</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_utilities_background.html">背景</a> </li>
                <li> <a href="lyear_utilities_borders.html">边框</a> </li>
                <li> <a href="lyear_utilities_colors.html">颜色</a> </li>
                <li> <a href="lyear_utilities_display.html">显示属性</a> </li>
                <li> <a href="lyear_utilities_flex.html">弹性布局</a> </li>
                <li> <a href="lyear_utilities_float.html">浮动</a> </li>
                <li> <a href="lyear_utilities_interactions.html">交互</a> </li>
                <li> <a href="lyear_utilities_opacity.html">透明度</a> </li>
                <li> <a href="lyear_utilities_overflow.html">溢出处理</a> </li>
                <li> <a href="lyear_utilities_position.html">定位</a> </li>
                <li> <a href="lyear_utilities_shadows.html">阴影</a> </li>
                <li> <a href="lyear_utilities_sizing.html">尺寸</a> </li>
                <li class="active"> <a href="lyear_utilities_spacing.html">间距</a> </li>
                <li> <a href="lyear_utilities_text.html">文本</a> </li>
                <li> <a href="lyear_utilities_vertical_align.html">垂直对齐</a> </li>
                <li> <a href="lyear_utilities_visibility.html">可见性</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-stove"></i>
                <span>示例页面</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_pages_doc.html">文档列表</a> </li>
                <li> <a href="lyear_pages_table.html">表格插件</a> </li>
                <li> <a href="lyear_pages_gallery.html">图库列表</a> </li>
                <li> <a href="lyear_pages_config.html">网站配置</a> </li>
                <li> <a href="lyear_pages_rabc.html">设置权限</a> </li>
                <li> <a href="lyear_pages_add_doc.html">新增文档</a> </li>
                <li> <a href="lyear_pages_login_1.html" target="_blank">登录页面1</a> </li>
                <li> <a href="lyear_pages_login_2.html" target="_blank">登录页面2</a> </li>
                <li> <a href="lyear_pages_login_3.html" target="_blank">登录页面3</a> </li>
                <li> <a href="lyear_pages_login_4.html" target="_blank">登录页面4</a> </li>
                <li> <a href="lyear_pages_error.html">错误页面</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-card-text-outline"></i>
                <span>其他内容</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_other_icons.html">图标</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-file-code-outline"></i>
                <span>JS 插件</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="lyear_pages_guide.html">表单向导</a> </li>
                <li> <a href="lyear_js_datepicker.html">日期选取器</a> </li>
                <li> <a href="lyear_js_colorpicker.html">选色器</a> </li>
                <li> <a href="lyear_js_chartjs.html">Chart.js</a> </li>
                <li> <a href="lyear_js_jconfirm.html">对话框</a> </li>
                <li> <a href="lyear_js_tags_input.html">标签插件</a> </li>
                <li> <a href="lyear_js_notify.html">通知消息</a> </li>
                <li> <a href="lyear_js_maxlength.html">长度判断</a> </li>
                <li> <a href="lyear_js_select.html">下拉选择</a> </li>
                <li> <a href="lyear_js_fullcalendar.html">日程插件</a> </li>
                <li> <a href="lyear_js_loading.html">loading插件</a> </li>
              </ul>
            </li>
            <li class="nav-item nav-item-has-subnav">
              <a href="javascript:void(0)">
                <i class="mdi mdi-folder-text-outline"></i>
                <span>多级菜单</span>
              </a>
              <ul class="nav nav-subnav">
                <li> <a href="#!">一级菜单</a> </li>
                <li class="nav-item nav-item-has-subnav">
                  <a href="#!">一级菜单</a>
                  <ul class="nav nav-subnav">
                    <li> <a href="#!">二级菜单</a> </li>
                    <li class="nav-item nav-item-has-subnav">
                      <a href="#!">二级菜单</a>
                      <ul class="nav nav-subnav">
                        <li> <a href="#!">三级菜单</a> </li>
                        <li> <a href="#!">三级菜单</a> </li>
                      </ul>
                    </li>
                  </ul>
                </li>
                <li> <a href="#!">一级菜单</a> </li>
              </ul>
            </li>
          </ul>
        </nav>

        <div class="sidebar-footer">
          <p class="copyright">
            <span>Copyright &copy; 2022. </span>
            <a target="_blank" href="http://www.bixiaguangnian.com">笔下光年</a>
            <span> All rights reserved.</span>
          </p>
        </div>
      </div>

    </aside>
    <!--End 左侧导航-->

    <!--头部信息-->
    <header class="lyear-layout-header">

      <nav class="navbar">

        <div class="navbar-left">
          <div class="lyear-aside-toggler">
            <span class="lyear-toggler-bar"></span>
            <span class="lyear-toggler-bar"></span>
            <span class="lyear-toggler-bar"></span>
          </div>
        </div>

        <ul class="navbar-right d-flex align-items-center">
          <!--顶部消息部分-->
          <li class="dropdown dropdown-notice">
            <span data-bs-toggle="dropdown" class="position-relative icon-item">
              <i class="mdi mdi-bell-outline fs-5"></i>
              <span class="position-absolute translate-middle badge bg-danger">7</span>
            </span>
            <div class="dropdown-menu dropdown-menu-end">
              <div class="lyear-notifications">

                <div class="lyear-notifications-title d-flex justify-content-between" data-stopPropagation="true">
                  <span>你有 10 条未读消息</span>
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                <div class="lyear-notifications-info lyear-scroll">
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          <!--End 顶部消息部分-->
          <!--切换主题配色-->
		  <li class="dropdown dropdown-skin">
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              <i class="mdi mdi-palette fs-5"></i>
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			<ul class="dropdown-menu dropdown-menu-end" data-stopPropagation="true">
              <li class="lyear-skin-title"><p>主题</p></li>
              <li class="lyear-skin-li clearfix">
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                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_2" value="translucent-green">
                  <label class="form-check-label" for="site_theme_2"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_3" value="translucent-blue">
                  <label class="form-check-label" for="site_theme_3"></label>
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                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_4" value="translucent-yellow">
                  <label class="form-check-label" for="site_theme_4"></label>
                </div>
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                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_5" value="translucent-red">
                  <label class="form-check-label" for="site_theme_5"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_6" value="translucent-pink">
                  <label class="form-check-label" for="site_theme_6"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_7" value="translucent-cyan">
                  <label class="form-check-label" for="site_theme_7"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="site_theme" id="site_theme_8" value="dark">
                  <label class="form-check-label" for="site_theme_8"></label>
                </div>
              </li>
			  <li class="lyear-skin-title"><p>LOGO</p></li>
			  <li class="lyear-skin-li clearfix">
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_1" value="default" checked="checked">
                  <label class="form-check-label" for="logo_bg_1"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_2" value="color_2">
                  <label class="form-check-label" for="logo_bg_2"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_3" value="color_3">
                  <label class="form-check-label" for="logo_bg_3"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_4" value="color_4">
                  <label class="form-check-label" for="logo_bg_4"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_5" value="color_5">
                  <label class="form-check-label" for="logo_bg_5"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_6" value="color_6">
                  <label class="form-check-label" for="logo_bg_6"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_7" value="color_7">
                  <label class="form-check-label" for="logo_bg_7"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="logo_bg" id="logo_bg_8" value="color_8">
                  <label class="form-check-label" for="logo_bg_8"></label>
                </div>
			  </li>
			  <li class="lyear-skin-title"><p>头部</p></li>
			  <li class="lyear-skin-li clearfix">
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_1" value="default" checked="checked">
                  <label class="form-check-label" for="header_bg_1"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_2" value="color_2">
                  <label class="form-check-label" for="header_bg_2"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_3" value="color_3">
                  <label class="form-check-label" for="header_bg_3"></label>
                </div>
                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_4" value="color_4">
                  <label class="form-check-label" for="header_bg_4"></label>
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                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_5" value="color_5">
                  <label class="form-check-label" for="header_bg_5"></label>
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                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_6" value="color_6">
                  <label class="form-check-label" for="header_bg_6"></label>
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                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="header_bg" id="header_bg_7" value="color_7">
                  <label class="form-check-label" for="header_bg_7"></label>
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                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_2" value="color_2">
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                <div class="form-check form-check-inline">
                  <input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_3" value="color_3">
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                  <input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_6" value="color_6">
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                  <input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_7" value="color_7">
                  <label class="form-check-label" for="sidebar_bg_7"></label>
                </div>
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                  <input class="form-check-input" type="radio" name="sidebar_bg" id="sidebar_bg_8" value="color_8">
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            <div class="card">
              <header class="card-header"><div class="card-title">边距</div></header>
              <div class="card-body">

                <p>Bootstrap 包括各种速记响应边距、填充和间隙实用程序类，用于修改元素的外观。</p>

                <h6>Margin 和 Padding</h6>
                <p>使用速记类将响应友好的 <code>margin</code> 或 <code>padding</code> 分配给元素或其边的子集。包括对单个属性、所有属性以及垂直和水平属性的支持。类是从默认的 Sass 映射构建的，范围从 <code>.25rem</code> 到 <code></code>。</p>

                <p>使用 CSS 网格布局模块？考虑使用 gap 实用程序。</p>

                <h6>符号</h6>
                <p>适用于所有断点（从 <code>xs</code> 到 <code>xxl</code>）的间距实用程序中没有断点缩写。这是因为这些类是从 <code>min-width: 0</code> 及以上应用的，因此不受媒体查询的约束。但是，其余断点确实包含断点缩写。</p>

                <p>这些类的命名格式为 <code>{property}{sides}-{size}</code>（用于 <code>xs</code>）和 <code>{property}{sides}-{breakpoint}-{size}</code>（用于 <code>sm</code>、<code>md</code>、<code>lg</code>、<code>xl</code> 和 <code>xxl</code>）。</p>

                <p>其中 property 是以下之一：</p>
                <ul>
                  <li><code>m</code> - 对于设置 <code>margin</code> 的类</li>
                  <li><code>p</code> - 用于设置 <code>padding</code> 的类</li>
                </ul>
                <p>其中 sides 是以下之一：</p>
                <ul>
                  <li><code>t</code> - 用于设置 <code>margin-top</code> 或 <code>padding-top</code> 的类</li>
                  <li><code>b</code> - 对于设置 <code>margin-bottom</code> 或 <code>padding-bottom</code> 的类</li>
                  <li><code>s</code> - （start）用于在 LTR 中设置 <code>margin-left</code> 或 <code>padding-left</code>，在 RTL 中设置 <code>margin-right</code> 或 <code>padding-right</code> 的类</li>
                  <li><code>e</code> - (end) 用于在 LTR 中设置 <code>margin-right</code> 或 <code>padding-right</code> ，在 RTL 中设置 <code>margin-left</code> 或 <code>padding-left</code> 的类</li>
                  <li><code>x</code> - 对于同时设置 <code>*-left</code> 和 <code>*-right</code> 的类</li>
                  <li><code>y</code> - 对于同时设置 <code>*-top</code> 和 <code>*-bottom</code> 的类</li>
                  <li>空白 - 用于在元素的所有 4 个边上设置 <code>margin</code> 或 <code>padding</code> 的类</li>
                </ul>
                <p>其中 size 是以下之一：</p>
                <ul>
                  <li><code>0</code> - 对于通过将其设置为 0 来消除边距或填充的类</li>
                  <li><code>1</code> - （默认情况下）用于将 <code>margin</code> 或 <code>padding</code> 设置为 <code>$spacer * .25</code> 的类</li>
                  <li><code>2</code> - （默认情况下）用于将 <code>margin</code> 或 <code>padding</code> 设置为 <code>$spacer * .5</code> 的类</li>
                  <li><code>3</code> - （默认情况下）用于将 <code>margin</code> 或 <code>padding</code> 设置为 <code>$spacer</code> 的类</li>
                  <li><code>4</code> - （默认情况下）用于将 <code>margin</code> 或 <code>padding</code> 设置为 <code>$spacer * 1.5</code> 的类</li>
                  <li><code>5</code> - （默认情况下）用于将 <code>margin</code> 或 <code>padding</code> 设置为 <code>$spacer * 3</code> 的类</li>
                  <li><code>auto</code> - 对于将 <code>margin</code> 设置为 auto 的类</li>
                </ul>
                <p>（您可以通过向 <code>$spacers</code> Sass 映射变量添加条目来添加更多大小。）</p>
                <h6>例子</h6>
                <p>以下是这些类的一些代表性示例：</p>
                <pre>.mt-0 {
        margin-top: 0 !important;
      }

      .ms-1 {
        margin-left: ($spacer * .25) !important;
      }

      .px-2 {
        padding-left: ($spacer * .5) !important;
        padding-right: ($spacer * .5) !important;
      }

      .p-3 {
        padding: $spacer !important;
      }</pre>

                <h6>水平居中</h6>
                <p>此外，Bootstrap 还包含一个 <code>.mx-auto</code> 类，用于通过将水平边距设置为 auto 来水平居中固定宽度的块级内容（即具有 <code>display: block</code> 和 <code>width</code> 的内容）。</p>
                <div class="border-example">
                  <div class="mx-auto" style="width: 200px; background-color: rgba(86,61,124,.15);">
                    中心元素
                  </div>
                </div>
                <pre>&lt;div class="mx-auto" style="width: 200px;"&gt;
        中心元素
      &lt;/div&gt;</pre>

                <h6>负边距</h6>
                <p>在 CSS 中，<code>margin</code> 属性可以使用负值（<code>padding</code>不能）。这些负边距默认是禁用的，但可以在 Sass 中通过设置 <code>$enable-negative-margins: true</code> 来启用。</p>

                <p>语法几乎与默认的正 <code>margin</code> 实用程序相同，但在请求的大小之前添加了 <code>n</code>。这是一个与 <code>.mt-1</code> 相反的示例类：</p>
                <pre>.mt-n1 {
        margin-top: -0.25rem !important;
      }</pre>

                <h6>差距</h6>
                <p>使用 <code>display:grid</code> 时，您可以在父网格容器上使用间隙实用程序。这可以节省向单个网格项目（显示的子项：网格容器）添加边距实用程序的麻烦。 <code>Gap</code> 实用程序默认是响应式的，并且是通过我们的实用程序 API 生成的，基于 <code>$spacers</code> Sass 映射。</p>
                <div class="border-example">
                  <div class="d-grid gap-3">
                    <div class="p-2 bg-light border">网格项 1</div>
                    <div class="p-2 bg-light border">网格项 2</div>
                    <div class="p-2 bg-light border">网格项 3</div>
                  </div>
                </div>
                <pre>&lt;div class="d-grid gap-3"&gt;
        &lt;div class="p-2 bg-light border"&gt;网格项 1&lt;/div&gt;
        &lt;div class="p-2 bg-light border"&gt;网格项 2&lt;/div&gt;
        &lt;div class="p-2 bg-light border"&gt;网格项 3&lt;/div&gt;
      &lt;/div&gt;</pre>

                <p>支持包括所有 Bootstrap 网格断点的响应选项，以及 <code>$spacers</code> 映射 (<code>0</code>-<code>5</code>) 中的六种尺寸。没有 <code>.gap-auto</code> 实用程序类，因为它实际上与 <code>.gap-0</code> 相同。</p>

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