table th表頭固定屬性設定

/*設置滾動屬性*/

tbody {

    display: block;

    max-height: 400px;

    overflow-y: scroll;

}



/*設置頭與內容自動對齊*/

table thead,tfoot,tbody tr {

    display: table;

    width: 100%;

    table-layout: fixed;

}



/*給滾動條預留寬度*/

table thead,tfoot {

    width: calc( 100% - 1em);

    background: #EFF0F5;

}