/* Custom radio-checkbox */
.radio, .checkbox {
	padding: 0 5px 0 0;
	background: url(../images/radio-checkbox.png) no-repeat;
	display: block;
	clear: left;
	float: left;
	position:relative;
	top:3px
}
/* radio */
.radio {background-position:0 0;height:13px;width:13px}
.radio-checked{background-position:0 -13px}
/* checkbox */
.checkbox    {background-position:-18px 0;height:15px;width:14px}
.checkbox-checked {background-position:-18px -15px}
.none {display:none}
/* REQUIRED CSS */
/* Custom radio-checkbox */
.radio, .checkbox {
	background: url(../images/radio-checkbox.png) no-repeat;
	padding: 0 5px 0 0;
	top:3px;
	/* don't need to modify this line */float:left;clear:left;position:relative;
}

/* radio */
.radio {background-position:0 0;height:13px;width:13px}
.radio-checked{background-position:0 -13px}

/* checkbox */
.checkbox {background-position:-18px 0;height:15px;width:14px}
.checkbox-checked {background-position:-18px -15px}

/* hide class ( addClass() is faster than hide() ) */
.hideInput {display:none}
Reorganize and comment code. Also remove of display:block (float already makes the element display as block)
Reorganize and comment code. Also remove of display:block (float already makes the element display as block)
