body  [class^="k-icon-document-"]:before,
body  [class*=" k-icon-document-"]:before {
  content: " " !important;
}

body .k-icon-document-pdf:before {
  background-image: url("https://ent.siteintelgroup.com/images/pdf-512.png") !important;
  width:18px;
  height:18px;
} 
body a.doclink.docman_track_download.k-ui-namespace  {
font-size: 15px !important;
text-decoration:underline !important}