- span{
- color: #ccc;
- float: right;
- font-weight: bold;
- display: inline-block;
- border-right: solid 1px #ccc;
- border-bottom: solid 1px #ccc;
- width: .4rem;
- height: .4rem;
- transform: rotate(-45deg);
- margin-top: 1rem;}
这个是一个箭头 demo;
来源: http://www.bubuko.com/infodetail-2735686.html