el-dialog居中css

/* // 模态框居中 */
.el-dialog__wrapper {
  text-align: center;
  overflow: auto;

  &:after {
    content: "";
    display: inline-block;
    vertical-align: middle;
    height: 100%;
  }

  .el-dialog {
    margin: 0px auto !important;
    display: inline-block;
    vertical-align: middle;
    text-align: left;
  }
}