How to style a disabled checkbox?

Question

Do you know how I could style a checkbox when it is disabled?

E.g.:

Answer 1

input[type='checkbox'][disabled][checked] {
width:0px; height:0px;
}
input[type='checkbox'][disabled][checked]:after {
 content:'\e013'; position:absolute; 
 margin-top:-10px;
 opacity: 1 !important;
 margin-left:-5px;
 font-family: 'Glyphicons Halflings';
 font-style: normal;
 font-weight: normal;
}