How to add an active link overlay to an image block

Does anyone have possible solutions to indicate to my site visitors that certain graphical elements on my site are hyperlinked other than the pointer cursor changing to a hand cursor? I really don't want to put a button underneath the image / graphical element and not interested in using caption overlay on hover effect. I was thinking if the entire image block could change color when you hover over it to indicate to click it would be ideal. How do you do this? Any suggestions are welcomed. Thanks!!

I believe WIX has this functionality (for reference). No interested in using WIX though :)

@Jimmibono Can you share site url?

www.ittalenthunters.com/recruitment

Under the Technology Sector for the six (6) icons.

MANY THANKS!

@Jimmibono Try Adding to Home > Design > Custom CSS

div#block-yui_3_17_2_1_1523043813683_96145 .image-block-wrapper:after {
   content: "";
   background: #000;
   position: absolute;
   width: 100%;
   left: 0;
   right: 0;
   top: 0;
   bottom: 0;
   opacity: 0;
}
div#block-yui_3_17_2_1_1523043813683_9614 .image-block-wrapper:hover:after {
   opacity: 0.5;
}
div#block-yui_3_17_2_1_1523043813683_9614 .image-block-wrapper {
   position: relative;
}