Onay Kutusu 18

/* Customize the label (the container20) */
.container20 {
display: block;
position: relative;
padding-left: 35px;
margin-bottom: 12px;
cursor: pointer;
font-size: 22px;
user-select: none;
}

/* Hide the browser's default checkbox */
.container20 input {
position: absolute;
opacity: 0;
cursor: pointer;
height: 0;
width: 0;
}

/* Create a custom checkbox */
.checkmark20 {
position: absolute;
top: 0;
left: 0;
height: 25px;
width: 25px;
background-color: #ccc;
}

/* When the checkbox is checked, add a blue background */
.container20 input:checked ~ .checkmark20 {
background-color: #2196F3;
}

/* Create the checkmark20/indicator (hidden when not checked) */
.checkmark20:after {
content: "";
position: absolute;
display: none;
}

/* Show the checkmark20 when checked */
.container20 input:checked ~ .checkmark20:after {
display: block;
}

/* Style the checkmark20/indicator */
.container20 .checkmark20:after {
left: 9px;
top: 5px;
width: 5px;
height: 10px;
border: solid white;
border-width: 0 3px 3px 0;
transform: rotate(45deg);
}