#xet-header {
z-index: 100;
position: fixed;
left: 0;
right: 0;
top: 0;
height: 60px;
line-height: 60px;
background-color: #ffffff;
box-shadow:0 4px 5px -3px rgba(0,0,0,.3);
transition: all 0.5s;
-moz-transition: all 0.5s;
-webkit-transition: all 0.5s;
-o-transition: all 0.5s;
overflow: hidden; 이거 추가 했는데요..
pc 에선 잘 되는데요
모바일에선 메뉴자체가 안 나옵니다...ㅡㅡ;