@media only screen and (max-width: 980px) {

}

@media only screen and (max-width: 640px) {

    body {
        width: 100vw;
        margin: 0 auto;
    }

}

@media only screen and (max-width: 448px) {

    h3 {
        font-size: 1em;
    }

    span {
        font-size: 1em;
    }

}

@media only screen and (max-width: 320px) {

}