Template:DLUT China B/css/nav.css

@keyframes fadeInDown {

   0% {
       opacity: 0;
       transform: translate3d(0, -30px, 0);
   }
   100% {
       opacity: 1;
       transform: none;
   }

}

ul.menu{

   height: 2em;
   background-color: powderblue;
   width: max-content;
   padding:0;

}

ul.menu > li {

   list-style: none;
   float: left;
   padding-left: 10px;
   padding-right: 10px;
   line-height: 2em;
   text-align: center;

}

ul.menu > li:hover{

   color:inherit;

}

ul.menu > li > ul.subMenu {

   padding: 0;
   display: none;
   position: absolute;
   z-index: 1;
   text-align: left;

}

ul.menu > li:hover > ul.subMenu {

   animation-name: fadeInDown;
   animation-fill-mode: forwards;
   animation-duration: .4s;
   animation-timing-function: cubic-bezier(.19, 1, .22, 1);
   animation-delay: 0s;
   display: -ms-flexbox;
   display: flex;
   flex-flow: column;

}

ul.menu > li > ul.subMenu > li {

   display: block;
   position: relative;
   background-color: #f7f7f7;
   padding: 5px 20px;

}

ul.menu > li > ul.subMenu > li:before {

   position: absolute;
   display: block;
   content: "";
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   box-shadow: 0 10px 33px rgba(9, 16, 43, .15);
   z-index: -1;

}

ul.menu > li:after {

   transition: all .8s cubic-bezier(.19, 1, .22, 1);
   content: "";
   display: block;
   width: 0;
   height: 3px;
   position:relative;
   bottom:3px;
   background: #41cd52;
   z-index: 1;

} ul.menu > li:hover:after {

   width: 100%;

}