@media (max-width: 768px){
  header .headerWrap{
    position: relative;
  }
  .menu {
    /*隱藏選單開始*/
    max-height: 0px;
    overflow: hidden;
    /*隱藏選單結束*/
    transition: max-height 2.3s;
    margin-top: 1px;
    /*絕對定位疊在網頁上*/
    position: absolute;
    z-index: 100;
    /*header 80px+1px boder 線條*/
    top: 71px;
    left: 0;
    right: 0;    
    background: #55908d;
  }
  .menu ul{
    flex-direction: column;
  }
  .menu li{
    width: 100%;
  }
  .menu li a{
    transition: all 0.3s;
    display: block;
    color: #fff;
    margin: 0 15px;
    border-bottom: 1px solid #00746d;
  }
  .menu li a:hover{
    color: #fff;
  }
  .menu li:hover:after{
    height: 0px;
  }
  .showmenu{
    display: inline-block;
  }
  .showmenu:after{
    content: "\f0c9";
    font-family: "FontAwesome";
    font-size: 2.5rem;
    padding: 0;
    position: relative;
    top: 50%;
    -webkit-transform: translateY(-25%);
    -ms-transform: translateY(-25%);
    transform: translateY(-25%);
    color: #05716d;
    margin-top: 5px;
  }
  /*jQ點擊後動態在 body 加上 class */
  .menu-show .menu{
    max-height: 500px
  }
}

@media (max-width: 375px) {
  .menu {
    top: 64px;
  }
}