.fixed_headers {table-layout:fixed; border-collapse:collapse}
.fixed_headers th, .fixed_headers td {border:1px solid black; padding:5px; text-align:left; word-break:break-all}
.text_wrap {word-break:normal !important;}
.fixed_headers th {border:none}
.fixed_headers thead {background-color:#333; color:#fdfdfd}
.fixed_headers thead tr {display:block; position:relative}
.fixed_headers tbody {display:block; overflow:auto; width:100%; height:500px}
.fixed_headers tbody tr:nth-child(even) {background-color:beige;}
.fixed_headers tbody tr:nth-child(odd) {background-color:#efefef}