1/* Hide the default checkbox */
2.container input {
3  position: absolute;
4  opacity: 1;
5  -webkit-appearance: none;
6  cursor: pointer;
7  height: 50px;
8  width: 50px;
9  box-shadow: -10px -10px 15px rgba(255,255,255,0.5),
10  10px 10px 15px rgba(0,0,70,0.12);
11  border-radius: 50%;
12  border: 8px solid #ececec;
13  outline: none;
14  display: flex;
15  justify-content: center;
16  align-items: center;
17  transition: .5s;
18}
19
20.container {
21  display: flex;
22  justify-content: center;
23  align-items: center;
24}
25
26.container input::after {
27  transition: .5s;
28  font-family: monospace;
29  content: '';
30  color: #7a7a7a;
31  font-size: 25px;
32  left: 0.45em;
33  top: 0.25em;
34  width: 0.25em;
35  height: 0.5em;
36  border: solid #7a7a7a;
37  border-width: 0 0.15em 0.15em 0;
38  transform: rotate(45deg);
39}
40
41.container input:checked {
42  box-shadow: -10px -10px 15px rgba(255,255,255,0.5),
43  10px 10px 15px rgba(70,70,70,0.12),
44  inset -10px -10px 15px rgba(255,255,255,0.5),
45  inset 10px 10px 15px rgba(70,70,70,0.12);
46  transition: .5s;
47}
48
49.container input:checked::after {
50  transition: .5s;
51  border: solid #15e38a;
52  border-width: 0 0.15em 0.15em 0;
53  transform: rotate(45deg);
54}
55