message: refactor Table: make thead sticky
diff: .table-fixed {
  thead {
  - position: fixed;
  + th {
  + position: sticky;
  + position: -webkit-sticky;
  top: 0;
  background: #fff;
  - z-index: 1111;
  + z-index: 10000;
  width: 100%;
  }
  }
  +}
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