Search code examples
htmlcsscss-positioncss-gradients

Prevent gradient overlay from scrolling

I am trying to put a small gradient on the bottom of a scrolling div. I've based my solution on the accepted answer to this SO thread. The gradient shows up fine, but when I scroll the content in the div, the bottom of the gradient moves. I need it to remain in place so that the content scrolls independently of the gradient. I've tried several combinations of position: fixed, position: relative, and position: relatve to no avail. What have I missed?

Relevant markup:

<div class="resultListContainer">
    <ul class="result">
        <li><span class="resultPermitNumber resultElement">B123456789</span></li>
        <li><span class="resultPermitType resultElement">FINAL</span></li>
        <li><span class="resultDisplayAddress resultElement">41975 LOUDOUN CENTER PL SE, LEESBURG, VA 20175</span></li>
    </ul>
    <!-- Lots more of the ul. -->
</div>

Relevant CSS:

.resultListContainer {
    border: 1px solid #000;
    height: 400px;
    width: 40em;
    overflow-y: scroll;
    font-size: 1em;
    position: relative;
}

.resultListContainer::before {
    background-image: linear-gradient( top, rgba( 255, 255, 255, 0 ) 0%, rgba( 255, 255, 255, 1 ) 100% );
    background-image: -moz-linear-gradient( top, rgba( 255, 255, 255, 0 ) 0%, rgba( 255, 255, 255, 1 ) 100% );
    background-image: -ms-linear-gradient( top, rgba( 255, 255, 255, 0 ) 0%, rgba( 255, 255, 255, 1 ) 100% );
    background-image: -o-linear-gradient( top, rgba( 255, 255, 255, 0 ) 0%, rgba( 255, 255, 255, 1 ) 100% );
    background-image: -webkit-linear-gradient( top, rgba( 255, 255, 255, 0 ) 95%, rgba( 255, 255, 255, 1 ) 100% );
    content: "\00a0";
    height: 100%;
    position: absolute;
    width: 100%;
}

.result {
    margin-bottom: 0;
    padding-top: 5px;
    padding-bottom: 5px;
    padding-left: 5px;
    list-style-type: none;
}

The result:

The gradient stop scrolls.

Solution

  • You need to wrap your container in another div that is positioned as relative.

    Also, overlay will block your scroll bar, so instead of width: 100% I used: left:0; right: 16px; - now scroll is clickable.

    Try my fiddle: https://fiddle.jshell.net/8c6k4k6d/1/