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```js // 1 document.cookie // 2 document.cookie = 'userid=1' // 3 document.cookie = `userid=1;expires=${new Date(time + 24*60*60*1000).toUTCString()}` // 4 getCookieValue('_csrfToken') function getCookieValue(str) { let cookiesArr = document.cookie.split(/\s/) for (let i...

[在线 demo ](https://codepen.io/Jewel-Li/pen/vwxezd?editors=1100) ```html 0:05 / 0:05 ``` ```css .wrapper { padding: 9px 5px; background-color: #d6d6d6; display: flex; justify-content: space-between; align-items: center; } .wrapper .audio { position: relative; box-sizing: border-box;...

[在线地址](http://js.jirengu.com/sivetuwura/1/edit?html,css,output) flex 布局 ```css body { margin: 0; } .container { height: 100vh; display: flex; flex-direction: column; justify-content: space-between; } .content { /* height: 1000px; */ /* height: 500px; */...