.button, button {
    max-width: 85%;
}

.avatar {
    width: 128px;
    margin-top: 60px;
    border-radius: 50%;
    overflow: hidden;
    object-fit: cover;
}

body {
    background-image: url("/images/bg4.png");
    background-position: center top;
    background-repeat: no-repeat;
    background-size: 100% calc(60px + (128px / 2));
}

/* For devices larger than 400px */
@media (min-width: 400px) {
    .button, button {
        width: 300px;
    }
    .avatar {
        width: 128px;
        height: 128px;
        margin-top: 60px;
    }
    body {
        background-size: 100% calc(60px + (128px / 2));
    }
}

/* For devices larger than 550px */
@media (min-width: 550px) {
    .avatar {
        width: 256px;
        height: 256px;
        margin-top: 60px;
    }
    body {
        background-size: 100% calc(60px + (256px / 2));
    }
}