<div class="tab_wrap"> <input id="tab1" type="radio" name="tab_btn" checked> <input id="tab2" type="radio" name="tab_btn"> <input id="tab3" type="radio" name="tab_btn"> <div class="tab_area"> <label class="tab1_label" for="tab1">tab1</label> <label class="tab2_label" for="tab2">tab2</label> <label class="tab3_label" for="tab3">tab3</label> </div> <div class="panel_area"> <div id="panel1" class="ta