Checkbox by IndexOC

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  background-color: #ccc;
26  border-radius: 0.25em;
27  box-shadow: 0.1em 0.1em 0.1em 0.1em rgb(41, 40, 40) inset;
28}
29
30/* When the checkbox is checked, add a blue background */
31.container input:checked ~ .checkmark {
32  background-color: rgb(41, 40, 40);
33  border-radius: 0.25em;
34}
35
36/* Create the checkmark/indicator (hidden when not checked) */
37.checkmark:after {
38  content: "";
39  position: absolute;
40  display: none;
41}
42
43/* Show the checkmark when checked */
44.container input:checked ~ .checkmark:after {
45  display: block;
46}
47
48/* Style the checkmark/indicator */
49.container .checkmark:after {
50  left: 0.45em;
51  top: 0.25em;
52  width: 0.25em;
53  height: 0.5em;
54  border: solid white;
55  border-width: 0 0.15em 0.15em 0;
56  transform: rotate(45deg);
57}
58