Tips for setting an image as the background on various mobile screen sizes

Is there a way to set an image as a background that will work effectively with multiple different mobile screen resolutions without distorting or cropping the image? For example, if I want the image to display correctly on both iPhone4 and iPhone6 without cutting off any part of it. Is there a way to show the middle of the image rather than only half of it along with half white space?

.landing-page{
    background: url(../img/landing-portrait.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    height: 80%;
    margin: 0;
}

Currently, using the above code displays almost half of the image with white space below. Adjusting the height to 100% causes the image to enlarge unevenly and pushes the content away from being centered. Any ideas on how to solve this issue?

htmlcssimage

Answer №1

Try using the background-size: 100%; property to achieve your desired effect.

The background-size: 100%; CSS rule will stretch the background image in both directions to fully cover the content area - W3.org

For example,

.landing-page{
    background: url(../img/landing-portrait.jpg);
    background-size: 100%;
    background-repeat: no-repeat;
    width: 100%;
    height: 80%;
    margin: 0;
}

You can find more information on the same topic HERE

I hope this explanation is helpful.

Answer №2

This response may not directly address your query, but it offers a different perspective and suggests exploring new possibilities.

Consider utilizing the figure and source tags for your needs. Familiarize yourself with these tags as they might become more prominent in responsive design.

With portable media devices, high resolution images are often unnecessary. Optimize load speeds by displaying images with smaller memory requirements.

For instance:

<figure>
  <picture>
    <source media="(min-width: 750px)" srcset="images/still_life-800_large_1x.jpg 1x, images/still_life-1600_large_2x.jpg 2x" type="image/jpeg">
    <source media="(min-width: 500px)" srcset="images/still_life-1000_medium.jpg" type="image/jpeg">
    <img src="images/still_life-500_small.jpg" alt="Still Life">
    <figcaption>Still Life</figcaption>
  </picture>
</figure>

This example involves some complexity with the use of srcset, which is expected to gain support in the future according to insights from an instructor at Udacity's Responsive Design course. In simpler cases, you can stick to using the src attribute.

In essence, you're specifying a media query (viewport size) paired with corresponding sources. The srcset dynamically selects the appropriate image based on the device's screen pixel ratio (enhancing image quality on devices like iPad2).

When the browser lacks support for the source tag, you can rely on the traditional img tag for fallback options.

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