1 .block{ 2 width: 200px; 3 height: 200px; 4 padding: 25px; 5 background-image:linear-gradient(#58a,#58a) 6 ,linear-gradient(to left,#0292f3 33.3%,transparent 0,transparent 66.6% , #0292f3 0) 7 ,linear-gradient(#0292f3 33.3%,transparent 0,transparent 66.6% , #0292f3 0) 8 ,linear-gradient(to right,#0292f3 33.3%,transparent 0,transparent 66.6% , #0292f3 0) 9 ,linear-gradient(to bottom,#0292f3 33.3%,transparent 0,transparent 66.6% , #0292f3 0); 10 background-clip: content-box,border-box,border-box,border-box,border-box; 11 background-position: 0 0,0 0,100% 0,0 100%,0; 12 background-size: 100%,100% 5px,5px 100%,100% 5px,5px 100%; 13 background-repeat: repeat,no-repeat,no-repeat,no-repeat,no-repeat; 14 }