<div class="top fl">
<div class="top_lf fl">
<div class="box1 kou">小格口</div>
<div class="txt1">
<p>省内8元起</p>
<p>省外10元起</p>
</div>
</div>
<div class="top_middle fl">
<div class="box3 kou">中格口</div>
<div class="txt1">
<p>省内10元起</p>
<p>省外14元起</p>
</div>
</div>
<div class="top_ri fr">
<div class="box2 kou">大格口</div>
<div class="txt1">
<p>省内12元起</p>
<p>省外18元起</p>
</div>
</div>
</div>
<script>
$('.top').on('click','.kou',function(){
$(this).addClass("kou_active").parent().siblings().children().removeClass("kou_active");
});
</script>
