Css Resize Background Image Keep Aspect Ratio. The background size css property lets you resize the background image of an element overriding the default behavior of tiling the image at its full size by specifying the width and or height of the image. We set the padding as a percentage based on the width of the.
By doing so you can scale the image upward or downward as desired. To maintain the aspect ratio of images in css the easiest way is to manually set the width of the image and the height to auto. If we want to accomplish the same with background images we must figure out how to maintain the aspect ratio of any html element.
The keyword syntax auto cover and contain the one value syntax sets the width of the image height becomes auto the two value syntax first value.
However the image will keep its aspect ratio the proportional relationship between the image s width and height. Only users with topic management privileges can see it. There are four different syntaxes you can use with this property. Let s consider a large image a 2982x2808 firefox logo image.