网站基本布局CSS

代码

<!DOCTYPE html>
<html>
<head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><title></title><style type="text/css">body {margin: 0;padding: 0;box-sizing: border-box;}.header {height: 60px;background: #79EDEE;}.warp {height: calc(100vh - 60px);box-sizing: border-box;display: flex;align-items: center;justify-content: space-between;}.left {width: 20%;height: 100%;position: relative;}.right {background-color: #CDFDEA;width: 100%;height: 100%;overflow-y: auto;}.left-top {background-color: #C1ECEA;height: 80%;box-sizing: border-box;overflow-y: auto;}.left-bottom {background-color: #D0F5BE;height: 20%;box-sizing: border-box;overflow-y: auto;}/* 滚动条样式 */::-webkit-scrollbar {width: 6px;}/* 滑块样式 */::-webkit-scrollbar-thumb{background-color: #9f9f9f; border-radius: 10px;}/* 滚动条轨道样式 */::-webkit-scrollbar-track{background-color: #fcfcfc;border-radius: 10px;}.collapse {height: 30px;width: 20px;border: 1px solid lightgray;display: flex;align-items: center;justify-content: center;background-color: aliceblue;}.menu-btn {display: flex;align-items: center;justify-content: center;}</style>
</head>
<body><div><div class="header"><div class="menu-btn"><button class="collapse" id="collapse" onclick="collapse()">关</button><button class="collapse" id="collapse" onclick="extend()">开</div></div></div><div class="warp"><div class="left" id="left-menu"><div class="left-top" id="left-top"></div><div class="left-bottom" id="left-bottom"></div></div><div class="right" id="right"></div></div></div>
</body><script type="text/javascript">let leftTopEl = document.getElementById('left-top')for (let i = 0; i < 100; i++) {leftTopEl.innerHTML += `<div>${i}</div>`;}let leftBottomEl = document.getElementById('left-bottom')for (let i = 0; i < 100; i++) {leftBottomEl.innerHTML += `<div>${i}</div>`;}let rightEl = document.getElementById('right')for (let i = 0; i < 1000; i++) {rightEl.innerHTML += `<div>${i}</div>`;}function collapse() {document.getElementById('left-menu').style.display = 'none'}function extend() {document.getElementById('left-menu').style.display = 'block'}
</script>
</html>