纯CSS写的对勾样式

& .cicle{
          position: relative;
          float: right;
          margin-right: -1rem;
          vertical-align: middle;
          1.4rem;
          height: 1.4rem;
          border: 1px solid #3399ff;
          border-radius: 50%;
        }
        & .select:after {
          content: '0a0';
          display: inline-block;
          border: 2px solid #3399ff;
          border-top- 0;
          border-right- 0;
          9px;
          height: 5px;
          -webkit-transform: rotate(-50deg);
          position: absolute;
          top:3px;
          left:2px;
        }

原文地址:https://www.cnblogs.com/supershare/p/8515246.html