element-ui/examples/demo-styles/tag.scss

.demo-block.demo-tag {
  .el-tag + .el-tag {
    margin-left: 10px;
  }

  .button-new-tag {
    margin-left: 10px;
    height: 32px;
    line-height: 30px;
    padding-top: 0;
    padding-bottom: 0;
  }

  .input-new-tag {
    width: 90px;
    margin-left: 10px;
    vertical-align: bottom;
  }

  .tag-group {
    display: flex;
    align-items: center;

    &__title {
      width: 45px;
      font-size: 14px;
      color: #606266;
    }

    &+.tag-group  {
      margin-top: 10px;
    }
  }
}