*{
    margin: 0;
    padding: 0;
}
audio{
    z-index: 5;
    position: absolute;
    bottom: 0;
    opacity: 0.1;
    -webkit-transition: all 2s;
    -moz-transition: all 2s;
    -ms-transition: all 2s;
    -o-transition: all 2s;
    transition: all 2s;
    outline: none;
}
audio:hover{
    opacity: 1;
}
.wall{
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    /* height: 100%; */
}
div#background{
    background: url("../img/preview.jpg")no-repeat;
    -webkit-animation: dd 100s linear infinite;
    -moz-animation: dd 100s linear infinite;
    -o-animation: dd 100s linear infinite;
    animation: dd 100s linear infinite;
    background-size: cover;
    background-position: center;
}
div#midground{
    background: url("../img/midground.png");
    z-index: 1;
    -webkit-animation: cc 100s linear infinite;
    -moz-animation: cc 100s linear infinite;
    -o-animation: cc 100s linear infinite;
    animation: cc 100s linear infinite;
}
div#foreground{
    background: url("../img/foreground.png");
    z-index: 2;
    -webkit-animation: cc 153s linear infinite;
    -o-animation: cc 153s linear infinite;
    -moz-animation: cc 153s linear infinite;
    animation: cc 153s linear infinite;
}
div#top{
    background: url("../img/midground.png");
    z-index: 4;
    -webkit-animation: dd 100s linear infinite;
    -o-animation: dd 100s linear infinite;
    animation: da 100s linear infinite;
}
@-webkit-keyframes cc {
    from{
        background-position: 0 0;
        transform: translateY(10px);
    }
    to{
        background-position: 600% 0;
    }
}
@-o-keyframes cc {
    from{
        background-position: 0 0;
        transform: translateY(10px);
    }
    to{
        background-position: 600% 0;
    }
}
@-moz-keyframes cc {
    from{
        background-position: 0 0;
        transform: translateY(10px);
    }
    to{
        background-position: 600% 0;
    }
}
@keyframes cc {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 600% 0;
    }
}

@keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}
@-webkit-keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}
@-moz-keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}
@-ms-keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}


.layer{
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 10;
    padding-top: 15%;
    box-sizing: border-box;
}
.content{
    width: 100%;
    margin: 0 auto;
    text-align: center;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
.content a{
    color: #fff;
    font-size: 16px;
    line-height: 40px;
    text-decoration: none;
    height: 40px;
    overflow: hidden;
    display: block;
    width: 200px;
    border: 1px solid #aedefc;
    border-left-color: #b4b4ff;
    border-right-color: #b4b4ff;
    border-radius: 5px;
    position: relative;
    margin: 10px 15px;
}
.content a div{
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    transition: all .3s;
}
.content a:hover{
    color: rgba(255,255,255,.8);
    font-weight: 600;
    background: rgba(136,216,246,.4);
}
.content a:hover div{
    transition: all .3s;
    top: -40px;
}


.logo{
    width: 80px;
    height: 80px;
    background-image: linear-gradient(to right,#fb929e,#b4b4ff, #aedefc);
    border-radius: 50%;
    padding: 5px;
    margin: 0 auto 20px;
    animation: logoimg 5s infinite linear;
    box-shadow: 0 0 10px rgba(253,150,169,.6);
}
.logo img{
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

@keyframes logoimg{
    0%{
        transform: rotateY(360deg);
    }
    100%{
        transform: rotateY(0deg);
    }
}

@media screen and (max-width: 1000px){
    audio{
        display: none;
    }
    .layer{
        padding-top: 15%;
    }
}