*{
    margin: 0;
    padding: 0;
}
.nav{
    position: fixed;
    z-index: 1;
    background-color: rgba(0, 0, 0, 0.5);
    width: 100%;
    height: 70px;
    font-size: 18px;
    z-index: 200;
}
.nav-menu{
    float: right;
}
.nav-nav{
    float: left;
}
.nav-nav li{
    float: left;
    width: 160px;
    height: 70px;
    line-height: 70px;
    text-align: center;
}
.nav-nav li a{
    display: inline-block;

}
.nav-nav li a div{
    width: 110px;
    height: 20px;
    overflow: hidden;
}
.nav-nav-item span{
    display: block;
    height: 24px;
    line-height: 24px;
}
.nav-nav-item span:first-child{
    color: #fff;
}
.nav-nav-item span:last-child{
    color: #3755D3;
    font-size: 20px;
    font-weight: 600;
}
.nav-nav-item{
    transition: all 0.5s ease;
    -moz-transition: all 0.5s ease; /* Firefox 4 */
    -webkit-transition: all 0.5s ease; /* Safari and Chrome */
    -o-transition: all 0.5s ease; /* Opera */
}
.nav-nav li:hover .nav-nav-item{
    margin-top: -24px;
}
.nav-nav li:nth-child(4) .nav-nav-item{
    margin-top: -24px;
}
.dropdown{
    display: none;
    background-color: rgba(0, 0, 0, 0.5);
    min-width: 180px;
}
.dropdown a{
    width: 180px;
    color: #fff;
    font-size: 16px;
}
.dropdown a:hover{
    background-color: rgba(255, 255, 255, 0.5);
    color: #3755D3;
    font-weight: 600;
}
.drop:hover .dropdown{
    display: block;
}
.site_link{
    position: absolute;
    margin-top: 10vh;
    font-size: 24px;
    margin-left: 5vw;
}
.info_content{
    position: absolute;
    width: 90vw;
    margin-top: 15vh;
    text-align: center;
    margin-left: 5vw;
}
.info_content h1{
    font-size: 36px;
    margin: 50px;
}
.info_content img{
    width: 100%;
}