在背景中拉伸和缩放 CSS 图像——只用 CSS

Question

I want that my background image stretch and scale depending on the browser viewport size.

I've seen some questions on Stack Overflow that do the job, like Stretch and scale CSS background for example. It works well, but I want to place the image using background, not with an img tag.

In that one an img tag is placed, and then with CSS we tribute to the img tag.

width:100%; height:100%;

It works, but that question is a bit old, and states that in CSS 3 resizing a background image will work pretty well. I've tried this example the first one, but it didn't work out for me.

Is there a good method to do it with the background-image declaration?

转载于:https://stackoverflow.com/questions/1150163/stretch-and-scale-a-css-image-in-the-background-with-css-only

Answer 1

CSS3 has a nice little attribute called background-size:cover.

This scales the image so that the background area is completely covered by the background image whilst maintaining aspect ratio. The entire area will be covered however part of the image may not be visible if the width/height of the resized image is too great