.main-content main a[href$='.doc'], a[href$='.docx'] {
    background: transparent url(/graphics/link_icons/doc-icon.png) center right no-repeat;
    padding-right: 18px;
}
.main-content main a[href$='.xls'], a[href$='.xlsx'] , a[href$='.xlsm'] {
    background: transparent url(/graphics/link_icons/xls-icon.png) center right no-repeat;
    padding-right: 18px;
}

.main-content main a[href$='.pdf'] {
	background: transparent url(/graphics/link_icons/pdf-icon.png) center right no-repeat;
    padding-right: 18px;
}

.main-content main a[href$='.zip'] {
    background: transparent url(/graphics/link_icons/zip-icon.png) center right no-repeat;
    padding-right: 18px;
}

.main-content main a[href^='mailto'] {
    background: transparent url(/graphics/link_icons/mail-icon.png) center right no-repeat;
    padding-right: 18px;
}
.main-content main a[href$='.ppt'], a[href$='.pptx'] {
    background: transparent url(/graphics/link_icons/ppt-icon.png) center right no-repeat;
    padding-right: 18px;
}
.main-content main a[href$='.mp3'], a[href$='.wav'] {
    background: transparent url(/graphics/link_icons/aud-icon.png) center right no-repeat;
    padding-right: 18px;
}