Стилизация чекбокса

input[type="checkbox"] {
    display: none;
}
input[type="checkbox"] + label {
    display: inline-block;
    padding-left: 1em;
    background: url(checkbox_states_spritesheet.png) left center no-repeat;
    cursor:pointer;
}

input[type="checkbox"]:checked + label {
    background: url(check_radio_sheet.png) -1em center no-repeat;
}