1/* Hide the default checkbox */
2.container input {
3  position: absolute;
4  opacity: 0;
5  cursor: pointer;
6  height: 0;
7  width: 0;
8  display: none;
9}
10
11.container {
12  --size: 50px;
13  width: var(--size);
14  height: var(--size);
15  background-color: #191A1E;
16  border-radius: 100%;
17  cursor: pointer;
18  padding: 5px;
19  box-shadow: 1.5px 1.5px 3px #0e0e0e, -1.5px -1.5px 3px rgb(95 94 94 / 25%), inset 0px 0px 0px #0e0e0e, inset 0px -0px 0px #5f5e5e;
20}
21
22.container .checkmark {
23  width: 100%;
24  height: 100%;
25  border-radius: 50%;
26  box-shadow: 1.5px 1.5px 3px #0e0e0e, -1.5px -1.5px 3px rgb(95 94 94 / 25%), inset 0px 0px 0px #0e0e0e, inset 0px -0px 0px #5f5e5e;
27  transition: all ease 0.3s;
28  padding: 8px;
29}
30
31.container .checkmark svg {
32  opacity: 0;
33  transition: all ease 0.3s;
34}
35
36.container input:checked + .checkmark {
37  box-shadow: 0px 0px 0px #0e0e0e, 0px 0px 0px rgb(95 94 94 / 25%), inset 1.5px 1.5px 3px #0e0e0e, inset -1.5px -1.5px 3px #5f5e5e;
38}
39
40.container input:checked + .checkmark svg {
41  opacity: 1;
42}