.webform-component-matrix .sticky-table tr th,
.webform-component-matrix .sticky-table tr td,
.webform-component-matrix .sticky-table tr{
  background: none !important;
  padding:0 0 4px 0 !important;
}

.webform-component-matrix .sticky-table tr th{
  padding-bottom: 0 !important;
  color: #000 !important;
}