SOURCE

          $(function(){
              $('.menuBtn').click(function(){
                  $(this).toggleClass('open');
                  $('.nav').toggleClass('nav-ok');
              });
              $(window).resize(function(){
                  //$('.nav').attr('style','');
              })
          })

        <div class="header">
           <span class="menuBtn"><b></b><b></b><b></b></span>
           <div class="logo">
               <a href="">LOGO</a>
           </div>
             <div class="nav">
               <ul>
                   <li><a href="">首页</a></li>
                   <li>
                       <a href="">关于我们</a>
                   </li>
                   <li>
                       <a href="">新闻中心</a>
                   </li>
                   <li>
                       <a href="">APP下载</a>
                   </li>
                   <li>
                       <a href="">会员服务</a>
                   </li>
                   <li>
                       <a href="">联系我们</a>
                   </li>
               </ul>
           </div>
        </div>

.header{
	height: 80px;
	line-height: 80px;
	background: #fff;
	padding: 0 20px;
}
.logo{
	float: left;
	width: 250px;
	padding-top: 10px;
}
.logo img {display: block;}
.nav { float: right; width: 700px; text-align: right;}

.nav li{
	display: inline;
	height: 80px;
}
.nav li a{
	display: inline-block;
	line-height: 1;
	padding: 4px 27px;
	border-radius: 10px;
	font-size: 14px;
	color: #8c8c8c;
}
.nav li a:hover{
	color: #fff;
	background: #828282;
}



/*Common For Max 768*/
@media only screen and (max-width: 1000px) {
	.wp {width: auto; padding: 0 20px;}
	.header { 
		height: 50px; 
		line-height: 50px; 
		position: fixed;
		left: 0;
		top:0;
		width: 100%;
		z-index: 999;
	}
 .logo{
 	width: 150px;
 }
 .nav { 
 	display: none;
 	float: none;
 	position: absolute;
 	width: 100%;
 	background: #fff;
 	left: 0;
 	top:50px;
 	text-align: center;
  }
  .nav li { display: block; 
  	height: auto;
   }
   .nav li a { 
   	display: block;
   	padding: 0;
   	height: 45px;
   	line-height: 45px;
   	border-radius: 0;
   	border-bottom: 1px solid #eee;
    }

.menuBtn{position: absolute; top:15px;right:52px;width:30px;height:30px;z-index:99;cursor:pointer;transition:.3s;-ms-transition:.3s;-moz-transition:.3s;-webkit-transition:.3s;-o-transition:.3s}
.menuBtn b{display:block;height:4px;background-color:#00469c;margin:4px 0;transition:.3s;-ms-transition:.3s;-moz-transition:.3s;-webkit-transition:.3s;-o-transition:.3s}
.menuBtn.open b{display:none;margin:-5px 0 0;position:absolute;left:0;top:50%;width:30px}
.menuBtn.open b:first-child{display:block;transform:rotate(45deg);-webkit-transform:rotate(45deg);-o-transform:rotate(45deg);-ms-transform:rotate(45deg)}
.menuBtn.open b:last-child{display:block;transform:rotate(-45deg);-webkit-transform:rotate(-45deg);-o-transform:rotate(-45deg);-ms-transform:rotate(-45deg)}



}