table表格内滚动特效代码

使用方法

.intro {
  max-width: 1280px;
  margin: 1em auto;
}
.table-scroll {
  position: relative;
  width:100%;
  z-index: 1;
  margin: auto;
  overflow: auto;
  height: 350px;
}
.table-scroll table {
  width: 100%;
  min-width: 1280px;
  margin: auto;
  border-collapse: separate;
  border-spacing: 0;
}
.table-wrap {
  position: relative;
}
.table-scroll th,
.table-scroll td {
  padding: 5px 10px;
  border: 1px solid #000;
  background: #fff;
  vertical-align: top;
}
.table-scroll thead th {
  background: #333;
  color: #fff;
  position: -webkit-sticky;
  position: sticky;
  top: 0;
}
/* safari and ios need the tfoot itself to be position:sticky also */
.table-scroll tfoot,
.table-scroll tfoot th,
.table-scroll tfoot td {
  position: -webkit-sticky;
  position: sticky;
  bottom: 0;
  background: #666;
  color: #fff;
  z-index:4;
}

a:focus {
  background: red;
} /* testing links*/

th:first-child {
  position: -webkit-sticky;
  position: sticky;
  left: 0;
  z-index: 2;
  background: #ccc;
}
thead th:first-child,
tfoot th:first-child {
  z-index: 5;
}