饿了么el-table组件设置fixed过后表格无法对齐问题

https://blog.csdn.net/nick_king/article/details/109583883

实际用时如下：

// 固定列相关样式
/deep/ .el-table__fixed-right-patch {
  background-color: transparent;
}
/deep/ .el-table__fixed-right::before, 
/deep/ .el-table__fixed::before {
  background-color: transparent;
}
// 解决固定列高度错位问题 8px与滚动条高度相等
/deep/.el-table__fixed-body-wrapper .el-table__body {
  padding-bottom: 8px!important;
}