1/* Hide the default checkbox */
2.container input {
3  position: absolute;
4  opacity: 0;
5  cursor: pointer;
6  height: 0;
7  width: 0;
8}
9
10.container {
11  display: block;
12  position: relative;
13  cursor: pointer;
14  font-size: 20px;
15  user-select: none;
16}
17
18/* Create a custom checkbox */
19.checkmark {
20  position: relative;
21  top: 0;
22  left: 0;
23  height: 1.3em;
24  width: 1.3em;
25  border: 2px solid #414141;
26  border-radius: 5px;
27  transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
28}
29
30.container input:hover ~ .checkmark {
31  border: 2px solid #0974f1;
32}
33
34/* When the checkbox is checked */
35.container input:checked ~ .checkmark {
36  box-shadow: 0 0 20px rgba(9, 117, 241, 0.8);
37  border: 2px solid #0974f1;
38}
39
40/* Create the checkmark/indicator (hidden when not checked) */
41.checkmark:after {
42  content: "";
43  position: absolute;
44  display: none;
45}
46
47/* Show the checkmark when checked */
48.container input:checked ~ .checkmark:after {
49  display: block;
50}
51
52/* Style the checkmark/indicator */
53.container .checkmark:after {
54  left: 0.45em;
55  top: 0.25em;
56  width: 0.25em;
57  height: 0.5em;
58  border: solid white;
59  border-width: 0 0.15em 0.15em 0;
60  transform: rotate(45deg);
61}