How to use CSS to create an alternating gradient effect background image-CSS Tutorial-php.cn

How to use CSS to create an alternating gradient effect background image

王林

Release： 2023-10-19 10:02:14

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How to use CSS to create an alternating gradient effect background image

How to use CSS to create a background image with an alternating gradient effect

Background images are an integral part of web design and can add beauty and appeal to the page. It is also a common practice to use CSS to achieve the effect of background images. This article will introduce how to use CSS to create a background image with an alternating gradient effect, and provide specific code examples.

1. Preparation
Before we start, we need to prepare some basic materials:

Background image - This is the picture material you want to use, it can be anything you want Like the image.
Gradient Effect - You can choose to use CSS linear gradient or radial gradient to create background colors with different effects. In this example we will use a linear gradient to achieve an alternating effect.

2. Create HTML structure
First, we need to create a basic HTML structure to place our background images and other content. Here is a simple example:

<!DOCTYPE html>
<html>
<head>
  <title>交替渐变背景图片示例</title>
  <style>
    body {
      margin: 0;
      padding: 0;
      height: 100vh;
      background: linear-gradient(to right, #ffffff 50%, #000000 50%);
    }
  </style>
</head>
<body>
  <!-- 这里放置你的内容 -->
</body>
</html>

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In the above example, we have defined a selector named body in the <style> tag, which Will be applied to the <body> element. We set the margin and padding properties to 0 to ensure that there is no margin around the entire page. height: 100vh Set the height of the page to the height of the viewport to ensure that the background image fills the entire screen.

3. Define the gradient effect
Next, we will define the gradient effect in the CSS selector. In this case, we want the background image to gradient from white to black, with an alternating effect. We can use CSS’s linear gradient function linear-gradient() to achieve this effect.

background: linear-gradient(to right, #ffffff 50%, #000000 50%);

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Among them, to right indicates that the gradient direction is from left to right. #ffffff and #000000 represent white and black respectively. 50% means that the color switching point position is 50%, that is, half is white and half is black.

4. Add a background image
Finally, we can further enrich the visual effect of the page by adding a background image. We can use the background-image property of CSS to achieve this function.

background-image: url("your-image-path.jpg");

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In the above code, you need to replace your-image-path.jpg with your own image file path. At the same time, you can also adjust the position, size and repetition of the background image through other CSS properties.

The complete sample code is as follows:

<!DOCTYPE html>
<html>
<head>
  <title>交替渐变背景图片示例</title>
  <style>
    body {
      margin: 0;
      padding: 0;
      height: 100vh;
      background: linear-gradient(to right, #ffffff 50%, #000000 50%),
                  url("your-image-path.jpg");
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }
  </style>
</head>
<body>
  <!-- 这里放置你的内容 -->
</body>
</html>

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Through the above code sample, you can easily use CSS to create a background image with an alternating gradient effect. You can adjust the color of the gradient and the position of the image according to your needs to achieve the desired effect. Hope this article is helpful to you!

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