html&css实现可调侧边栏```html fsafafsd ``` ![image.png](https://p6

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body {
      display: flex;
      margin: 0;
      min-height: 100vh;
    }

    .scalable {
      min-width: 200px;
      position: relative;
      background-color: beige;
    }

    .content img {
      display: block;
      width: 150px;
      user-select: none;
    }

    .main {
      flex: 1;
      background-color: aqua;
    }

    .scalable .content {
      padding: 20px;
      padding-right: 34px;
    }

    .scalable .separator {
      width: 14px;
      height: 100%;
      background-color: #fff;
      box-shadow: 0 0 2px rgba(0, 0, 0, 0.35);
      position: absolute;
      top: 0;
      right: 0;
      cursor: col-resize;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .scalable .separator i {
      width: 2px;
      height: 14px;
      display: inline-block;
      background-color: #e9e9e9;
      margin: 0 1px;
    }
  </style>
</head>

<body>
  <div class="scalable">
    <div class="content">
      <img src="https://avatars.githubusercontent.com/u/61002730?v=4" alt="">
    </div>
    <div class="separator">
      <i></i>
      <i></i>
    </div>
  </div>
  <div class="main"></div>

  <script>
    let startX, startWidth;
    let $ = tag => document.querySelector(tag)

    let getWidth = () => {
      return parseInt(window.getComputedStyle($('.scalable')).width)
    }

    let onDrag = (e) => {
      let newWidth = e.clientX - startX + startWidth;
      $('.scalable').style.width = newWidth + 'px'
    }
    let stopDrag = () => {
      document.documentElement.removeEventListener('mousemove', onDrag)
      document.documentElement.removeEventListener('mouseup', stopDrag)
    }

    let startDrag = (e) => {
      startX = e.clientX
      startWidth = getWidth()
      document.documentElement.addEventListener('mousemove', onDrag)
      document.documentElement.addEventListener('mouseup', stopDrag)
    }

    $('.separator').addEventListener('mousedown', startDrag)


  </script>
</body>

</html>
html&css实现 可调侧边栏

html&css实现可调侧边栏
