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 }