.custom_chk input[type=checkbox] {
display:none;
cursor: pointer;
}
 
.custom_chk input[type=checkbox] + label
{
background:url(../img/checkbox.png) no-repeat 0 0;
height: 18px;
width: 100%;
display:inline-block;
padding-left: 25px;
cursor: pointer;
}
.custom_chk input[type=checkbox]:checked + label
{
background:url(../img/checkbox.png) no-repeat 0 -48px;
height: 18px;
width: 100%;
/* width: 18px; */
display:inline-block;
padding-left: 25px;
}