I have a picture of 2000x1333 in size and I need to put it on bg so that it is completely on the block. When I try, it turns out something like that: (red border - block size) 
CSS:
#header { background: #fff url('../img/bg1.png') center no-repeat; background-size: auto; max-width: 1920px; height: 1080px; border-top: 11px solid #204055; border: 1px solid red; }
background-size: cover | contain | 100%;- HamSter 5:59 pm