el-dialog修改弹框到顶部的高度margin-top

el-dialog组件中

 style() {
    
    
        let style = {
    
    };
        if (!this.fullscreen) {
    
    
          style.marginTop = this.top;
          if (this.width) {
    
    
            style.width = this.width;
          }
        }
        return style;
      }

说明style.marginTop = this.top，所以可以直接添加top属性就可以修改margin-top

  <el-dialog
                        title="测试标题"
                        :visible.sync="DialogVisible"
                        append-to-body
                        width="60%"
                        top="8vh"
                >