Desktop:

1920x1080: Width 1920px, height 1080px. Max 350kb. Jpg/gif/HTML5

The banner is responsive, but we recommend placing the imprortant elements, like text and logo, withing 1520px in the center of the banner 200px safety margin on each side). For top and bottom we recommend at least 100px safety margins to account for toolbars etc. in different browsers.

Mobile: 

375x667: Width 375px, height 667px. Maks 100kb. Jpg/gif.

We recommend a 50px seafety margin at the top and bottom.