@media (max-width: 640px) {
    .font-resize {font-size:1.0rem;}
    .overflow {overflow: auto; height: 100px;}
}

@media (min-width: 641px) {
    .font-resize {font-size:1.0rem;}
    .overflow {overflow: auto; height: 200px;}
}

@media (min-width:960px) {
    .font-resize {font-size:1.1rem;}
    .overflow {overflow: auto; height: 250px;}
}

@media (min-width:1100px) {
    .font-resize {font-size:1.2rem;}
    .overflow {overflow: auto; height: 300px;}
}