How to use CSS to make the background image non-repeating

In web design, the use of background images can beautify the page, prompt the rhythm of writing, and create the atmosphere of the web page. However, the patterns of some background images are small and will appear repeated when tiled, affecting the appearance and reading experience. This article will introduce how to use CSS to achieve the effect of non-repeating background images.

1. Use the background-size background size attribute

Use the background-size attribute to change the size of the background image so that it fits the size of the current element. When the background image is tiled, this attribute can also help achieve the effect of non-repeating background images.

We can set the value of the background-size attribute to "auto 100%". This way the CSS will tile the background image horizontally instead of repeating it vertically. For example:

div{
  background-image: url(bg.jpg);
  background-repeat: repeat-x;
  background-size: auto 100%;
}

In this example, the background image of the div element will be tiled horizontally instead of repeated vertically.

2. Use the background-attachment background attachment attribute

Another way to achieve non-repeating background images is to use the background-attachment attribute. This property specifies whether the background image's position is relative to the viewport or to the containing element.

We set the value of the background-attachment attribute to fixed. In this way, the CSS will fix the background image in the window, so that the background image will not move when the user scrolls the page. For example:

div{
  background-image: url(bg.jpg);
  background-repeat: repeat;
  background-attachment: fixed;
}

In this example, the background image of the div element will scroll with the page, rather than moving relative to the div element on which it is displayed. This ensures that the background image is not repeated.

3. Use the background-origin background origin attribute

If you want to limit the background image to an edge of the element instead of the entire element, you can use the background-origin attribute. For example, assuming you want to constrain a background image to the upper left corner of a container, you can use the following CSS:

div{
  background-image: url(bg.jpg);
  background-repeat: no-repeat;
  background-size: contain;
  background-origin: border-box;
  padding: 50px;
}

In this example, the div element's background image will only appear within the margin area of ​​the container (i.e. 50px from the border) without exceeding the border limits.

To sum up, using the above three CSS properties can easily achieve the effect of non-repeating background images. Whether you want to achieve visual beauty or improve the user's reading experience, achieving this effect is very important.

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