The issue with 'margin-top' image overlay not displaying properly when images have varying heights

The problem becomes most apparent in the example provided at this JsFiddle link

When setting the image overlay to margin-top: -100%, it does not function correctly for items larger than 300x300.

I attempted to resolve this with jQuery using the following code:

$(window).load(function () {
        $(".overlay").each(function () {
            var $parentHeight = $(".overlay").parent().height();

            $(".overlay").css("margin-top", -$parentHeight);
        });
    });

However, this approach yielded the same result.

jqueryhtmlcssheightmargin

Answer №1

Instead of using margin-top:-100%, it is recommended to use top:0;

.overlay {
  width: 100%;
  height: 100%;
  background-color: red;
  opacity: 0;
  z-index: 1;
  -webkit-transition: .2s all;
  position: absolute;
  top:0;
}

I made this adjustment to your style, you can view it here: https://jsfiddle.net/IA7medd/ngmpm5x0/

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