.pkp_structure_head::before{
display:none;
}

table {
 font-family:arial,sans-serif;
 border-collapse:collapse;
 width:100%
}
td,
th {
 border:1px solid #ddd;
 text-align:left;
 padding:8px
}
tr:nth-child(odd) {
 background-color:#ddd
}