导航栏也疯狂：CSS动画让导航栏活起来，跟随鼠标滑动！

<div class="container">
        <nav>
            <a href="#">home</a>
            <a href="#">about</a>
            <a href="#">blog</a>
            <a href="#">protfolio</a>
            <a href="#">conanct</a>
            <div class="animation"></div>
        </nav>
    </div>

* {
            padding: 0;
            margin: 0;
        }
        body {
            display: flex;
            width: 100%;
            height: 100vh;
            justify-content: center;
            align-items: center;
            background-color: rgb(17, 55, 87);
        }
        nav {
            position: relative;
            width: 590px;
            height: 50px;
            background-color: rgb(20, 66, 104);
            border-radius: 8px;
            box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
        }
        nav a {
            z-index: 10;
            position: relative;
            display: block;
            float: left;
            font-size: 15px;
            line-height: 50px;
            width: 100px;
            height: 50px;
            text-decoration: none;
            text-transform: uppercase;
            color: #ffff;
            text-align: center;
        }
        nav a:nth-child(1) {
            width: 100px;
        }
        nav a:nth-child(2) {
            width: 110px;
        }
        nav a:nth-child(3) {
            width: 100px;
        }
        nav a:nth-child(4) {
            width: 160px;
        }
        nav a:nth-child(5) {
            width: 120px;
        }
        nav .animation {
            position: absolute;
            top: 0;
            left: 0;
            width: 100px;
            height: 100%;
            background-color: #f97f51;
            z-index: 1;
            transition: all 0.3s;
            border-radius: 8px;
        }
        nav a:nth-child(1):hover~.animation {
            width: 100px;
            left: 0px;
        }
        nav a:nth-child(2):hover~.animation {
            width: 110px;
            left: 100px;
        }
        nav  a:nth-child(3):hover~.animation {
            width: 100px;
            left: 210px;
        }
        nav a:nth-child(4):hover~.animation {
            width: 160px;
            left: 310px;
        }
        nav a:nth-child(5):hover~.animation {
            width: 120px;
            left: 470px;
        }