$( window ).scroll(function(){
    var scrollHeight = $( window ).scrollTop();
	var section0 = $('.head-boxex').outerHeight();
	var section1 = $('.head-boxex').outerHeight() + $('.ex-box').outerHeight();
    if( scrollHeight > section0 ){
        $( '.anc-fixed-sp' ).addClass('ex');
		}else{
        $( '.anc-fixed-sp' ).removeClass('ex');
    }
    if( scrollHeight > section1 ){
        $( '.anc-pc-area' ).addClass('ex');
		}else{
            $( '.anc-pc-area' ).removeClass('ex');
    }
});