.file--x-office-document {
  background: none;
}

a[href$=".pdf"]:before {
  content: url('../images/pdf-icon_bcdb53fc86.jpg');
  padding-right:3px;
}
a[href$=".PDF"]:before {
  content: url('../images/pdf-icon_bcdb53fc86.jpg');
  padding-right:3px;
}

a[href$=".xls"]:before
{
  content: url('../images/excel-icon_52b48117ad.jpg');
  padding-right:2px;
}
a[href$=".xlsx"]:before
{
  content: url('../images/excel-icon_52b48117ad.jpg');
  padding-right:2px;
}

a[href$=".doc"]:before
{
  content: url('../images/word-icon_a8eafcc125.jpg');
  padding-right:2px;
}
a[href$=".docx"]:before
{
  content: url('../images/word-icon_a8eafcc125.jpg');
  padding-right:2px;
}
a[href$=".ppt"]:before
{
  content: url('../images/powerpoint-icon_52dbc085b1.jpg');
  padding-right:2px;
}
a[href$=".pptx"]:before
{
  content: url('../images/powerpoint-icon_52dbc085b1.jpg');
  padding-right:2px;
}