@media screen and (max-width:575px){
    body{
        padding-top: 0;
        padding-bottom: 50px;
    }
}

@media screen and (max-width:465px){
    .box{
        width:90%;
    }
}

@media screen and (max-width:1000px){
    .altbar{
        display: block;
    }
}

@media screen and (max-width:768px){
    iframe{
        width:100%;
    }
}