How can I change the size of a Bootstrap checkbox?
Or you can style it with pixels.
.big-checkbox {width: 30px; height: 30px;}
input[type=checkbox]
{
/* Double-sized Checkboxes */
-ms-transform: scale(2); /* IE */
-moz-transform: scale(2); /* FF */
-webkit-transform: scale(2); /* Safari and Chrome */
-o-transform: scale(2); /* Opera */
padding: 10px;
}