body{
    margin: 0px;
    padding: 0px;
    height: 200%;
    background-color:#0A2B3E;
}
#main{
    width: 92%;
    height: 560px;
    background: linear-gradient(#66FFFD,#FFF);
    position: absolute;
    top:50%;
    left: 50%;
    transform: translate(-50%,-50%);
    overflow: hidden;
}
#logo{
    height: 100px;
    width: 100%;
    position: absolute;
    top: 40%;
    margin-top: -50px;
    text-align: center;
}
#mountainImg{
    height: 350px;
    width: 100%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top:250px;
}
#btn{
    height: 60px;
    width: 60px;
    border-radius: 50%;
    background: linear-gradient(#8EFFFc,#6AF0D5);
    position: absolute;
    top:80%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    box-shadow: 0 0 0 8px rgba(140,237,243,.2),0 0 0 16px rgba(140,237,243,.3);
    cursor: pointer;
}
#btn img{
    position: absolute;
    top:50%;
    left: 50%;
    transform: translate(-50%,-50%);
}