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css_effect_map_collection
/
斜角样式
/
index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      height: 500px;
      width: 500px;
      padding-top: 100px;
    }
    .rectangle2 {
      margin-top: 50px;
      height: 100px;
      width: 300px;
      background: linear-gradient(-75deg, transparent 30px, #58a 0) right,
                  linear-gradient(75deg, transparent 30px, #58a 0) left;
      background-size: 50% 100%;
      background-repeat: no-repeat;
    }
    .rectangle {
      position: relative;
      height: 300px;
      width: 300px;
      /* background: #58a; */
      background: linear-gradient(-45deg, transparent 7.5px, #58a 0) right,
                  linear-gradient(45deg, transparent 7.5px, #58a 0) left;
      /* clip-path: polygon(
        0 0,
        100% 0,
        100% calc(100% - 12.5px),
        calc(100% - 12.5px) 100%,
        12.5px 100%,
        0 calc(100% - 12.5px)
      ); */
      background-size: 50% 100%;
      background-repeat: no-repeat;
      border: 1px solid blue;
      /* border-right: 1px solid red; */
    }
    .rectangle::before {
      position: absolute;
      content: "";
      width: 16px;
      height: 16px;
      bottom: -8px;
      left: -8px;
      transform: rotate(46deg);
      background: transparent;
      border-top: 1px solid blue;
    }
    .rectangle::after {
      position: absolute;
      content: "";
      width: 16px;
      height: 16px;
      bottom: -8px;
      right: -8px;
      transform: rotate(46deg);
      background: transparent;
      border-left: 1px solid blue;
    }

    .rectangle3 {
      position: relative;
      margin-top: 50px;
      margin-left: 50px;
      height: 100px;
      width: 300px;
      background: #58a;
    }
    .rectangle3::before {
      position: absolute;
      content: "";
      right: -20px;
      bottom: 0;
      width: 0;
      height: 0;
      border-bottom: 100px solid transparent;
      border-left: 20px solid #000000;
    }
    .rectangle3::after {
      position: absolute;
      content: "";
      left: -30px;
      bottom: 0;
      width: 0;
      height: 0;
      border-bottom: 100px solid transparent;
      border-right: 30px solid rgba(0,0,0,0.5);
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="rectangle"></div>
    <div class="rectangle2"></div>
    <div class="rectangle3"></div>
  </div>
</body>
</html>