Pattern by elijahgummer

1.container {
2  width: 100%;
3  height: 100%;
4  position: relative;
5  background: #f0f0f0;
6}
7
8.container::before {
9  content: "";
10  position: absolute;
11  top: 0;
12  left: 0;
13  width: 100%;
14  height: 100%;
15  background: linear-gradient(
16      45deg,
17      #3498db 25%,
18      transparent 25%,
19      transparent 50%,
20      #3498db 50%,
21      #3498db 75%,
22      transparent 75%,
23      transparent
24    ),
25    linear-gradient(
26      -45deg,
27      #3498db 25%,
28      transparent 25%,
29      transparent 50%,
30      #3498db 50%,
31      #3498db 75%,
32      transparent 75%,
33      transparent
34    );
35  background-size: 20px 20px;
36  opacity: 0.8;
37}
38