【CSS】实现tag选中对钩样式

样式效果：

代码实现：(纯css，伪类实现)

<div class="item" v-for="i in 3" :key="i" :class="i===1?'selected':''">{{ i }}</div>


<style>
    .item {
      padding: 6px 12px;
      background-color: #ffffff;
      border: 1px solid #ddd;
      width: 40px;
      margin: 10px;
      text-align: center;
      display: inline-block;

      position: relative;   // 必须有
    }

    .selected {
      border-color: #14BCF5;
    
      &:before {        // 三角形背景
        content: "";
        position: absolute;
        right: 0;
        bottom: 0;
        border: 10px solid #14BCF5;
        border-top-color: transparent;
        border-left-color: transparent;
      }

      &:after {        // 对钩
        content: "";
        width: 6px;
        height: 8px;
        position: absolute;
        right: 3px;
        bottom: 3px;
        border: 1px solid #fff;
        border-top-color: transparent;
        border-left-color: transparent;
        transform: rotate(45deg);
      }
    }
</style>