@media only screen and (min-width: 320px) and (max-width: 680px) {
    .welcomebutton {       
        margin: 15px 0;        
        min-width: 9em;
        line-height: 40px;        
        font-size: 2.5em;        
        padding-top: 10px;
        padding-bottom: 10px;        
        width: 9em;
    }

    .header-block {
        font-size:12px;
    }
}

@media only screen and (min-width: 680px) and (max-width: 1200px) {
    .welcomebutton {
        margin: 15px 0;        
        min-width: 9em;
        line-height: 40px;
        font-size: 2.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .header-block {
        font-size: 16px;
    }
}



@media only screen and (min-width: 1200px) {
    .welcomebutton {
        margin: 15px 0;
        min-width: 9em;
        line-height: 40px;
        font-size: 2.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .header-block {
        font-size: 16px;
    }
}


/* iPhone 5 & 5S in portrait & landscape */
@media only screen and (min-device-width : 320px) and (max-device-width : 568px) {
    .welcomebutton {
        margin: 15px 0;
        min-width: 9em;
        line-height: 40px;
        font-size: 1.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .wrapper .scroll {
        overflow-y: scroll;
        height: auto;
    }
}

/* iPhone 6, 7, & 8 Plus in portrait & landscape */
@media only screen and (min-device-width : 414px) and (max-device-width : 736px) {
    .welcomebutton {
        margin: 15px 0;
        min-width: 9em;
        line-height: 40px;
        font-size: 1.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .wrapper .scroll {
        overflow-y: scroll;
        height: auto;
    }
}

/* iPhone X in portrait & landscape */
@media only screen and (min-device-width : 375px) and (max-device-width : 812px) and (-webkit-device-pixel-ratio : 3) {
    .welcomebutton {
        margin: 15px 0;
        min-width: 9em;
        line-height: 40px;
        font-size: 1.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .wrapper .scroll {
        overflow-y: scroll;
        height: auto;
    }
}

/* iPad in portrait & landscape */
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) {
    .welcomebutton {
        margin: 15px 0;
        min-width: 9em;
        line-height: 40px;
        font-size: 2.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .wrapper .scroll {
        overflow-y: scroll;
        height: auto;
    }
}



/* ----------- iPad Pro ----------- */
/* Portrait and Landscape */
@media only screen and (min-device-width: 1024px) and (max-device-width: 1366px) and (-webkit-min-device-pixel-ratio: 1.5) {
    .welcomebutton {
        margin: 15px 0;
        min-width: 9em;
        line-height: 40px;
        font-size: 2.5em;
        padding-top: 10px;
        padding-bottom: 10px;
        width: 9em;
    }

    .wrapper .scroll {
        overflow-y: scroll;
        height: auto;
    }
}