Here is a code snippet in my CSS:
.test {
background-image:url('images/smiley.gif');
background-repeat:repeat;
}
This is an example of HTML I use:
<div class="test" id="xyz">some code which should come background to image</div>
The existing code sets a background image, but what if I want to overlay an image on top of the text instead of behind it? I also need this image to automatically repeat to fill the element regardless of its size.
Is there a way to achieve this effect?
This little trick should do the job. Using the :before selector allows you to generate a pseudo-element that acts like a fake div. By setting the content attribute (in this case, just a space), you create this fake div that can then be styled with properties like background-image, height, width, and z-index. This pseudo-element sits above the real div (which has a z-index of zero) and gives the illusion of being behind it.
<!DOCTYPE html>
<html>
<head>
<title>Test page</title>
<style>
.test:before {
content: " ";
position: absolute;
width: 100px; height: 100px;
background-image:url('http://upload.wikimedia.org/wikipedia/commons/a/a4/Smiley_transparent.png');
background-repeat:repeat;
z-index: 1;
}
.test {
z-index: 0;
}
</style>
</head>
<body>
<div class="test" id="xyz">some code which should come background to image</div>
</body>
</html>
You can see the combined approach with Paul D. Waite's insightful answer to achieve similar results without adding extra elements like spans.
In my initial thought process, I believed applying the :before to .test :first-child:before would make it a child of the xyz div, but as it turns out, it works just fine without that specificity.
If you want to test out how this looks, you can check out the live result on jsfiddle.
<!DOCTYPE html>
<html>
<head>
<title>Test page</title>
<style>
.test {
position: relative;
}
.test:before {
content: " ";
position: absolute;
top: 0;
bottom: 0;
height: auto;
left: 0;
right: 0;
width: auto;
background-image:url('http://upload.wikimedia.org/wikipedia/commons/a/a4/Smiley_transparent.png');
background-repeat:repeat;
}
</style>
</head>
<body>
Some text before.
<div class="test" id="xyz">some code which should come background to image</div>
Some text after.
</body>
</html>
This task is quite intriguing. To achieve the desired outcome, you may consider incorporating an additional HTML element. Another approach would be to utilize .test:before instead of .test .foregroundImage, as demonstrated in Georges’ solution.
<div class="test" id="xyz"><span class="foregroundImage"></span>some code which should come background to image</div>
.test {
position: relative;
}
.test .foregroundImage {
position: absolute;
top: 0;
bottom: 0;
height: auto;
left: 0;
right: 0;
width: auto;
background-image:url('images/smiley.gif');
background-repeat:repeat;
}
For a functional demonstration, refer to http://jsfiddle.net/RUJYf/.
CSS
<style type="text/css>
.test { position: relative; }
.test img, .test p { position: absolute; top: 0; }
.test img { z-index: 10; }
.test p { margin: 0; padding: 0; }
</style>
HTML
<div class="test">
<img src="images/smiley.gif" />
<p>some code that will appear behind the image</p>
</div>
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