<header>
        <nav>
            <a href="">首页</a>
            <a href="">市场营销</a>
            <a href="">生产控制</a>
            <a href="">技术研发</a>
            <a href="">品质管理</a>
            <a href="">工艺文件</a>
        </nav>
        <button>登录</button>
    </header>
    <style>
        header{
            height: 50px;
            background-color: #333;
            padding: 0 2em;
            display: flex;
            place-content: space-between;
        }
        nav{
            display: flex;
            text-align: center;
            line-height: 50px;
        }
        nav a{
            color: #ccc;
            text-decoration: none;
            min-width: 7em;
            flex: 1;
        }
        nav a:hover{
            color: black;
            background-color: aqua;
            transition: 0.3s;
            font-size: 1.2rem;
        }
        header button{
            border: none;
            width: 5em;
            color:beige;
            background-color:cornflowerblue;
            font-size: 1rem;
        }
        header button:hover{
            cursor: pointer;
            background-color:aqua;
            transition: 0.3s;
            color: #000;
        }
    </style>

<style>
        .container{
            width: 500px;
            height: 150px;
            margin-left: 100px;
            text-align: center;
            display:grid;
            grid-template-columns: repeat(5, 1fr);
            grid-template-rows: repeat(5, 1fr);
        }
        .container>.item:first-child{
            grid-area: 1 / 1 / span 2 / span 5;
            background-color: aliceblue;
        }
        .container>.item:nth-child(2){
            grid-area: 3/2;
        }
        .container>.item:nth-child(3){
            grid-row: 4;
            grid-column: 2;
        }
        .container>.item:last-child{
            grid-area: 5/1/5/6;
            background-color: antiquewhite;
        }
    </style>

总结：

学了flex和grid，感觉现在可以做一个主页框架了，细节要慢慢优化了，遇到不能实现的地方再查资料，还有就是项目没有倒角，看上去有点生硬。

【文章原创作者：高防cdn http://www.558idc.com/gfcdn.html提供，感恩】