What are the proper steps to ensure images are displayed correctly on mobile devices?

https://i.sstatic.net/M68Ob.jpg

https://i.sstatic.net/fPKXr.jpg

Our background image is 1920x1080p and looks great on desktop browsers, but it's not displaying properly on mobile devices in either portrait or landscape mode. Is there a way to resolve this issue without needing multiple images? Can we automatically resize the image using CSS?

#tf-home{
    background: url(../images/OdysseyTitleImage.jpg);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    color: #cfcfcf;
}

#tf-home .overlay{
    background: -moz-linear-gradient(top,  rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.73) 17%, rgba(0,0,0,0.66) 35%, rgba(0,0,0,0.55) 62%, rgba(0,0,0,0.4) 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.8)), color-stop(17%,rgba(0,0,0,0.73)), color-stop(35%,rgba(0,0,0,0.66)), color-stop(62%,rgba(0,0,0,0.55)), color-stop(100%,rgba(0,0,0,0.4))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* IE10+ */
    background: linear-gradient(to bottom,  rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.73) 17%,rgba(0,0,0,0.66) 35%,rgba(0,0,0,0.55) 62%,rgba(0,0,0,0.4) 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#cc000000', endColorstr='#66000000',GradientType=0 ); /* IE6-9 */
    height: 1080px;
    background-attachment: fixed;
}
.home-lead{
    color: #fff;
    padding: 10px 15px;
    background-color: rgba(51, 51, 51, 0.9);
    font-size: 21px;
}
.content{
    position: relative;
    padding: 30% 0 0;
}

Here is the HTML content:

<div id="tf-home" class="text-center">
    <div class="overlay">
        <div class="content">
            <div><a href="https://www.youtube.com/watch?v=HRlP0t41wCw" class="btn tf-btn btn-default popup-video">Watch the trailer</a></div>
            <a href="#tf-game" class="fa fa-angle-down page-scroll"></a>
        </div>
    </div>
</div>
htmlcssresponsive-design

Answer №1

The height: 1080px; in #tf-home .overlay is likely the cause of this issue. While it may look fine on desktop due to sufficient space, the same height is applied to mobile which results in the graphic appearing much larger than intended for mobile viewports.

Consider adjusting the height using a media query specifically for mobile devices. For example:

@media (max-width: 600px) {
    #tf-home{
        background-attachment: scroll;
    }
    #tf-home .overlay {
        height: 320px;
    }
}

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