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  transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
27}
28
29/* When the checkbox is checked */
30.container input:checked ~ .checkmark {
31  background: #0974f1;
32  border-color: #0974f1;
33  filter: drop-shadow(5px 5px);
34}
35
36/* Create the checkmark/indicator (hidden when not checked) */
37.checkmark:after {
38  content: "";
39  position: absolute;
40}
41
42.container .checkmark:after {
43  inset: 0;
44  margin: auto;
45  width: 0.5em;
46  height: 0.5em;
47  background-color: #414141;
48  border-width: 0 0.15em 0.15em 0;
49}
50
51/* Show the checkmark when checked */
52.container input:checked ~ .checkmark:after {
53  width: 0.25em;
54  height: 0.5em;
55  border: solid #414141;
56  border-width: 0 0.15em 0.15em 0;
57  border-color: white;
58  background-color: transparent;
59  transform: rotate(45deg);
60}
61
62