Checkbox by WrongCodeU

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: 0.2pc;
27  box-shadow: 3px 3px grey;
28}
29
30/* When the checkbox is checked, add a blue background */
31.container input:checked ~ .checkmark {
32  background-image: linear-gradient(90deg, aqua, blue);
33}
34
35/* Create the checkmark/indicator (hidden when not checked) */
36.checkmark:after {
37  content: "";
38  position: absolute;
39  display: none;
40}
41
42/* Show the checkmark when checked */
43.container input:checked ~ .checkmark:after {
44  display: block;
45}
46
47/* Style the checkmark/indicator */
48.container .checkmark:after {
49  left: 0.45em;
50  top: 0.25em;
51  width: 0.25em;
52  height: 0.5em;
53  border: solid white;
54  border-width: 0 0.15em 0.15em 0;
55  transform: rotate(45deg);
56}