Remove word ‘ ARCHIVES: ‘

Hello All, on the page /service .header-media-section .section-title-wrapper has a title of ARCHIVES: SERVICES I would like to remove the word ARCHIVES: I can use CSS however it removes the entire title ... I only need to remove the word ARCHIVES: (and the colon) ? (on a side note the word SERVICES is contained in a Span tag .section-title-wrapper .entry-title span) thanks.. Dale