1.button {
2  position: relative;
3  padding: 10px 22px;
4  border-radius: 6px;
5  border: none;
6  color: #fff;
7  cursor: pointer;
8  background-color: #7d2ae8;
9  transition: all 0.2s ease;
10}
11
12.button:active {
13  transform: scale(0.96);
14}
15
16.button:before,
17.button:after {
18  position: absolute;
19  content: "";
20  width: 150%;
21  left: 50%;
22  height: 100%;
23  transform: translateX(-50%);
24  z-index: -1000;
25  background-repeat: no-repeat;
26}
27
28.button:hover:before {
29  top: -70%;
30  background-image: radial-gradient(circle, #7d2ae8 20%, transparent 20%),
31    radial-gradient(circle, transparent 20%, #7d2ae8 20%, transparent 30%),
32    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
33    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
34    radial-gradient(circle, transparent 10%, #7d2ae8 15%, transparent 20%),
35    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
36    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
37    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
38    radial-gradient(circle, #7d2ae8 20%, transparent 20%);
39  background-size: 10% 10%, 20% 20%, 15% 15%, 20% 20%, 18% 18%, 10% 10%, 15% 15%,
40    10% 10%, 18% 18%;
41  background-position: 50% 120%;
42  animation: greentopBubbles 0.6s ease;
43}
44
45@keyframes greentopBubbles {
46  0% {
47    background-position: 5% 90%, 10% 90%, 10% 90%, 15% 90%, 25% 90%, 25% 90%,
48      40% 90%, 55% 90%, 70% 90%;
49  }
50
51  50% {
52    background-position: 0% 80%, 0% 20%, 10% 40%, 20% 0%, 30% 30%, 22% 50%,
53      50% 50%, 65% 20%, 90% 30%;
54  }
55
56  100% {
57    background-position: 0% 70%, 0% 10%, 10% 30%, 20% -10%, 30% 20%, 22% 40%,
58      50% 40%, 65% 10%, 90% 20%;
59    background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%;
60  }
61}
62
63.button:hover::after {
64  bottom: -70%;
65  background-image: radial-gradient(circle, #7d2ae8 20%, transparent 20%),
66    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
67    radial-gradient(circle, transparent 10%, #7d2ae8 15%, transparent 20%),
68    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
69    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
70    radial-gradient(circle, #7d2ae8 20%, transparent 20%),
71    radial-gradient(circle, #7d2ae8 20%, transparent 20%);
72  background-size: 15% 15%, 20% 20%, 18% 18%, 20% 20%, 15% 15%, 20% 20%, 18% 18%;
73  background-position: 50% 0%;
74  animation: greenbottomBubbles 0.6s ease;
75}
76
77@keyframes greenbottomBubbles {
78  0% {
79    background-position: 10% -10%, 30% 10%, 55% -10%, 70% -10%, 85% -10%,
80      70% -10%, 70% 0%;
81  }
82
83  50% {
84    background-position: 0% 80%, 20% 80%, 45% 60%, 60% 100%, 75% 70%, 95% 60%,
85      105% 0%;
86  }
87
88  100% {
89    background-position: 0% 90%, 20% 90%, 45% 70%, 60% 110%, 75% 80%, 95% 70%,
90      110% 10%;
91    background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%;
92  }
93}