展开扇子题目，
#box:hover #item1 {
transform:rotate(-60deg);
}
当悬浮在父盒子，子元素旋转
webkit
display: -webkit-box：将元素设置为弹性伸缩盒子模型。-webkit-box-orient: vertical：设置伸缩盒子的子元素排列方式为垂直排列。overflow: hidden：隐藏超出元素容器的内容。text-overflow: ellipsis：当文本溢出时，显示省略号。-
/* 最多显示两行文本 */-webkit-line-clamp: 2;
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div class="div1"><div class="div2">是兄弟就来砍我</div><div class="div3"><div class="li1"><table><tbody><tr><td rowspan="2"><div class="circle">天乐</div></td><td>18:57</td></tr><tr><td>今天吃点啥？</td></tr></tbody></table></div><div class="li2"><table><tbody><tr><td>18:59</td><td rowspan="2"><div class="circle">热巴</div></td></tr><tr><td>最近八合里周年庆，咱们去薅羊毛呀</td></tr></tbody></table></div><div class="li1"><table><tbody><tr><td rowspan="2"><div class="circle">天乐</div></td><td>19:01</td></tr><tr><td>行收拾一下走吧，早点去排个号</td></tr></tbody></table></div></div><div class="div4"><div class="shuru"><textarea class="text" id="" placeholder="请输入"></textarea></div><div class="submit" onclick="tijiao()">发送</div></div></div><style>body,html {display: flex;justify-content: center;align-items: center;background-color: gray;}.div1 {background-color: white;width: 400px;height: 460px;border-radius: 5px;}.div2 {margin: 0px;padding: 10px;font-size: 16px;font-weight: bolder;}.div3 {border-top: 2px solid gray;border-bottom: 2px solid gray;padding: 10px;height: 500px;background-color: white;}.div4 {height: 200px;background-color: white;}.circle {width: 50px;height: 50px;background-color: #3e4ea0;border-radius: 50%;text-align: center;/* vertical-align: middle; */line-height: 50px;color: #fff;font-size: 16px;}.li2 {float: right;margin: 20px;}.div3 .li1 table tbody tr:nth-child(2) td:nth-child(1),.div3 .li3 table tbody tr:nth-child(2) td:nth-child(1) {padding: 10px;background-color: #f2f4f5;border-top-right-radius: 10px;border-bottom-left-radius: 10px;border-bottom-right-radius: 10px;}.div3 .li1 table tbody tr:nth-child(1) td:nth-child(1),.div3 .li3 table tbody tr:nth-child(1) td:nth-child(1) {padding-right: 10px;}.div3 .li2 table tbody tr:nth-child(1) td:nth-child(2) {padding-left: 10px;}.div3 .li2 table tbody tr:nth-child(2) td:nth-child(1) {padding: 10px;background-color: #4571ff;border-top-left-radius: 10px;border-bottom-left-radius: 10px;border-bottom-right-radius: 10px;color: white;}.div3 .li2 table tbody tr:nth-child(1) td:nth-child(1) {float: right;}table,td {/* border: 1px solid #000; */}.shuru {padding: 10px;}.submit {margin-top: 40px;margin-right: 10px;float: right;background-color: #4571ff;padding-left: 20px;padding-right: 20px;padding-top: 8px;padding-bottom: 8px;color: #fff;border-radius: 5px;cursor: pointer;}</style><script>var div3 = document.querySelector('.div3');console.log(div3.innerHTML);var text = document.querySelector(".text");function tijiao() {var add = `<div class="li2"><table><tbody><tr><td>18:59</td><td rowspan="2"><div class="circle">热巴</div></td></tr><tr><td>${text.value}</td></tr></tbody></table></div>`div3.innerHTML = div3.innerHTML + add;}</script></body></html>
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div class="div1" onclick="download1()">点击下载美图</div><div class="div2">现在是北京时间</div>
</body><script>var div1 = document.querySelector('.div1');function download1() {div1.innerText = '正在下载'}var div2 = document.querySelector('.div2');setInterval(function () {var date = new Date();if (date.getSeconds() < 10 && date.getMinutes() < 10) {div2.innerText = `当前时间：${date.getFullYear()}年${date.getMonth() + 1}月${date.getDate()}日${date.getHours()}时0${date.getMinutes()}分0${date.getSeconds()}秒`}else if (date.getSeconds() < 10) {div2.innerText = `当前时间：${date.getFullYear()}年${date.getMonth() + 1}月${date.getDate()}日${date.getHours()}时${date.getMinutes()}分0${date.getSeconds()}秒`}else div2.innerText = `当前时间：${date.getFullYear()}年${date.getMonth() + 1}月${date.getDate()}日${date.getHours()}时${date.getMinutes()}分${date.getSeconds()}秒`}, 1000)</script><style>.div1 {cursor: pointer;}.div2 {font-size: 40px;}
</style></html>