【1】制作三角形

<style>.box {width: 0;height: 0;margin: 0 auto;/* 等腰直角三角： 各边框宽度一致，将上边框保留，其他边框设置为透明色 */border: 100px solid transparent;border-top: 100px solid red;}
</style>    <div class="box"></div>

【2】文字超过范围显示省略号

<style>.box {width: 200px;height: 200px;/* 一下三句就是做省略的关键 */white-space: nowrap;overflow: hidden;text-overflow: ellipsis;}
</style><div class="box"></div>

【3】超出宽度在div内左右滑动

<style>
.box {height: auto;/* 设置不换行 */white-space: nowrap;/* x轴超出可滚动 */overflow-x: auto;overflow-y: hidden;border: 1px solid #ccc;
}
</style><div class="box"><img src="../image/logo.png" alt="">...
</div>

【4】清除浮动

<style>
.box:before,
.box:after {content: "";display: block;clear: both;
}
</style><div class="box"><div class="left"></div><div class="right"></div>
</div>

【5】背景颜色多变

<style>
.box {position: relative;width: 200px;height: 200px;margin: 100px auto;background-color: #ccc;
}.box::before {content: '';position: absolute;right: 0;bottom: 0;left: 0;height: 5px;background: -webkit-repeating-linear-gradient(45deg, #ff6c6c 0, #ff6c6c 20%, transparent 0, 		transparent 25%, #1989fa 0, #1989fa 45%, transparent 0, transparent 50%);background: repeating-linear-gradient(-45deg, #ff6c6c 0, #ff6c6c 20%, transparent 0, transparent 25%, #1989fa 0, #1989fa 45%, transparent 0, transparent 50%);background-size: 80px;
}
</style><div class="box"></div>

【6】上下居中

<style>
.box {height: 200px;
}.middle {margin-top: 100px;transform: translateY(-50%);
}
</style><div class="box"><div class="middle"></div>
</div>

【7】不显示滚动条但可滚动

<style>
.box {overflow: scroll;
}.box::-webkit-scrollbar {display: none;width: 0 !important;
}
</style><div class="box"></div>

【8】更改滚动条样式

<style>
/*滚动条整体样式*/
.box::-webkit-scrollbar { width: 5px; /*高宽分别对应横竖滚动条的尺寸*/height: 5px;
}/*滚动条里面小方块*/
.box::-webkit-scrollbar-thumb { border-radius: 5px;box-shadow: inset 0 0 5px #fafafa;-webkit-box-shadow: inset 0 0 5px #fafafa;background: rgba(0,0,0,.075);
}/*滚动条里面轨道*/
.box::-webkit-scrollbar-track {box-shadow: inset 0 0 5px #fafafa;-webkit-box-shadow: inset 0 0 5px #fafafa;border-radius: 0;background: #ececec;
}
</style><div class="box"></divhttps://www.cnblogs.com/ranyonsue/p/9487599.html

【9】去掉input、select自带样式

<style>
input {width: 100%;outline-color: invert;outline-style: none;outline-width: 0px;border: none;border-style: none;text-shadow: none;-webkit-appearance: none;-webkit-user-select: text;outline-color: transparent;box-shadow: none;
}select {border: 0;display: block;width: 100%;white-space: nowrap;appearance: none;-moz-appearance: none;-webkit-appearance: none;
}
</style>

【10】动画animation

<style>
.box {	animation: move 2.5s linear 2.5s;
}@keyframes move {0% {...}100% {...}
}
</style><div class="box"></div>  

【11】过渡效果

<style>
.box {width: 200px;height: 20px;margin: 0 auto;border: 1px solid red;border-radius: 10px;box-sizing: border-box;
}.son {width: 50%;height: 100%;border-radius: 10px;background-color: red;/* 过渡效果 */transition: all 1s ease-in-out 0.3s;
}.box:hover .son {width: 100%;background-color: green;
}
</style><div class="box"><div class="son"></div>
</div>