Hacktoberfest2020-HTML-CSS-WEB/css_gradient_border/style.css at 8b469ded9af4e5d3bea8ee9db4eed51fbdd30418 · dikshantmali/Hacktoberfest2020-HTML-CSS-WEB · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

:root {
  --border-width: 3px;
}

* {
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
  margin: 0;
  background: #222;
}

.gradient-border {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 500px;
  height: 400px;
  font-family: 'Roboto', sans-serif;
  font-size: 2.5rem;
  text-transform: uppercase;
  color: white;
  background: #222;
  border-radius: var(--border-width);
}

.gradient-border::after {
  position: absolute;
  content: '';
  top: calc(-1 * var(--border-width));
  left: calc(-1 * var(--border-width));
  z-index: -1;
  width: calc(100% + var(--border-width) * 2);
  height: calc(100% + var(--border-width) * 2);
  background: linear-gradient(
    60deg,
    hsl(224, 85%, 66%),
    hsl(269, 85%, 66%),
    hsl(314, 85%, 66%),
    hsl(359, 85%, 66%),
    hsl(44, 85%, 66%),
    hsl(89, 85%, 66%),
    hsl(134, 85%, 66%),
    hsl(179, 85%, 66%)
  );
  background-size: 300% 300%;
  background-position: 0 50%;
  border-radius: calc(2 * var(--border-width));
  animation: moveGradient 4s alternate infinite;
}

@keyframes moveGradient {
  50% {
    background-position: 100% 50%;
  }
}