How to control the display and style of background images with css

In web design and development, background images are a very important element. Through background images, we can completely change the feel and atmosphere of the web page, while also increasing the visual effect of the web page. In actual development, CSS is a common style sheet language used to control how to display HTML elements. CSS can also be used to control the display and style of background images.

If you want to change the background image of the web page through CSS, you can follow the steps below:

1. First, you need to have a background image. You can design a background image that matches the theme of the web page from the Internet or by yourself. Then, save the picture in a local folder.
2. In the CSS file, use the background-image property to set the background image.

For example, the background image can be set to a local file called background.jpg through the following code:

body {
    background-image: url("background.jpg");
}

In this example, the body element refers to the body of the entire web page Content, after setting the background-image attribute, you can set background.jpg as the background image of the web page.

3. After setting the background image, you can continue to use other CSS properties to further adjust the display effect of the image.

The following are commonly used CSS properties:

background-repeat: Control how the background image is displayed repeatedly.

background-position: Control the position of the background image.

background-size: Control the size of the background image, which can be set to cover or contain.

For example, you can use the following code to set the background image to be non-repeating, centered, and adaptive to the width of the web page:

body {
    background-image: url("background.jpg");
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}

Through the combination of these attributes, you can create a variety of different styles Background picture. It should be noted that if the size of the background image is too large, it may affect the loading speed of the web page. Therefore, when choosing a background image, you need to keep the file size as small as possible.

In short, controlling the display and style of background images through CSS can effectively change the visual effects of web pages and improve the attractiveness and readability of web pages.

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