Standard Desktop Background Size. The standard wallpaper sizes are determined by the most popular resolutions of the time. The background-size property specifies the size of the background images.
For example, the first value is applied to the first background-image. This is a pretty standard resolution for HD wallpaper. Everyone wants stylish desktop backgrounds, and now, with Unsplash, you can get the most beautiful backgrounds on the internet and use them for free.
It will give you the size of your screen, use those numbers for your wallpaper.
The background-size property specifies the size of the background images.
Strikingly's background images are meant to fill a wide variety of screen sizes, from monitor to tablet to phone. The background-size property in CSS is one of the most useful — and most complex — of the background properties. Feel free to send us your own wallpaper and we will consider adding it to appropriate category.