body, html {
    height: 100%;
    padding: 0;
    margin: 0;
    overflow: hidden;
}

.app-wrapper {
    width: 100%;
    height: 100%;
    margin: 0 auto;
    background-color: white;
}

@media (min-width: 501px) {
    body {
        background-color: #f8f9fa;
    }
    .app-wrapper {
        max-width: 500px;
        box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    }
}

#header, #footer {
    text-align: center;
    font-weight: bold;
}

#header { font-size: 3rem; }
#footer { font-size: 1.5rem; }

#final-points { font-size: 6rem; }

@media (min-width: 501px) {
    #header { font-size: 4rem; }
    #footer { font-size: 2.5rem; }
}

.hitbox {
    height: 30vh;
    display: flex;
    padding: 0;
}

.hitbtn {
    width: 33.33%;
    height: 100%;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 0 !important;
    font-size: 5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    user-select: none;
    transition: filter 0.1s;
}

@media (min-width: 501px) {
    .hitbtn { font-size: 8rem; }
}

.hitbtn:active {
    filter: brightness(0.9);
}