<div class="container">
    <div class="header-info fsb">
        <div class="logo">
            <a href="./index.html">
                <img src="images/logo.png" alt="" />
            </a>
        </div>
        <div class="header-info-right">
            <form action="/" method="POST">
                <div class="search-icon">
                    <img src="images/search.png" alt="" />
                </div>
                <input type="text" />
                <select name="language" id="language">
                    <option disabled selected hidden>语言</option>
                    <option value="0">中文</option>
                    <option value="1">英文</option>
                </select>
                <span>中文</span>
            </form>
        </div>
    </div>
</div>
<nav>
    <ul>
        <a class="header-nav" href="./index.html">首页</a>
        <a class="header-nav" href="./product.html">产品中心</a>
        <a class="header-nav" href="./video.html">视频中心</a>
        <a class="header-nav" href="./news.html">新闻中心</a>
        <a class="header-nav" href="./about.html">关于我们</a>
        <a class="header-nav" href="./dealer.html">经销商</a>
        <a class="header-nav" href="./concat.html">联系我们</a>
    </ul>
</nav>

<div class="small-header">
    <div class="logo-box">
        <div class="logo">
            <a href="./index.html">
                <img src="images/logo.png" alt="" />
            </a>
        </div>
        <div class="nav-icon">
            <img src="images/nav.png">
        </div>
    </div>
    <form class="pr" action="/" method="POST">
        <div class="search-icon">
            <img src="images/search.png" alt="" />
        </div>
        <input type="text" />
    </form>
</div>