How to Create a 50% Window-Width Background Color Split in CSS?
Dec 13, 2024 pm 08:22 PM
CSS: Achieving a Background Color 50% of the Window Width
In web development, sometimes the need arises to create a background that is split in half, featuring different colors on opposite sides. Traditionally, this effect has been achieved by setting a default background color on the
tag and overlaying aChallenges with background-size Support
One approach to splitting the background is to use the background-size property, which allows for specifying the background image's size. This code snippet exemplifies this method:
body {
background: #fff;
}
#wrapper {
background: url(1px.png) repeat-y;
background-size: 50% auto;
width: 100%;
}
However, this solution is not viable for projects that require compatibility with Internet Explorer 7/8, as these browsers do not support the background-size property.
Solution Using a Dedicated Div Element
For older browsers, an alternative approach involves creating a separate
#background {
position: fixed;
top: 0;
left: 0;
width: 50%;
height: 100%;
background-color: pink;
}
This fixed div remains stationary while the page scrolls and creates the desired split-background effect.
Options for Modern Browsers
For projects that support modern browsers, additional techniques can be employed:
Linear Gradient:
Linear gradients offer an effortless way to split backgrounds. By using a linear-gradient in the background property of the
, you can create a hard cutoff at 50% for each color:body {
height: 100%;
background: linear-gradient(90deg, #FFC0CB 50%, #00FFFF 50%);
}
Multiple Backgrounds with background-size:
This method involves applying a background color to the element and then using a
background image with background-size set to 50% of the page width:html {
height: 100%;
background-color: cyan;
}
body {
height: 100%;
background-image: url('background.jpg');
background-repeat: repeat-y;
background-size: 50% auto;
}
Additional Note
To ensure that the background covers the entire viewport, it's recommended to set the height of both the and
elements to 100%. This guarantees that the background will extend down to the user's viewport, even if the page content is shorter.The above is the detailed content of How to Create a 50% Window-Width Background Color Split in CSS?. For more information, please follow other related articles on the PHP Chinese website!
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