canvas { background: #eee; width: 100%; height: 100%; }
body { 
    margin: 0;
    background: rgb(49, 51, 54);
    outline: 0;
}

:root{
    --grid-width: 6;
    --grid-height: 6;
    --button-margin: 0.5vh;
    --tile-size: calc((100vh / var(--grid-height)) - 2 * var(--button-margin));
    --opacity: 0.164;
    --border-radius: 1vh;
    --sidebar-width: 25vh;
}

/* override settings on portrait mode: */
@media (orientation: portrait) {

    :root{
        --button-margin: 0.5vw;
        --tile-size: calc((100vw / var(--grid-width)) - 2 * var(--button-margin));
        --border-radius: 1vw;
        --sidebar-width: 40vw;
    }

}

.grid-button {
    border-radius: var(--button-margin);
    margin: var(--button-margin);
    width: calc(var(--tile-size) - (var(--button-margin) * 2));
    height: calc(var(--tile-size) - (var(--button-margin) * 2));
    display: inline-block;
    outline: 0;
    transition-duration: 0.3s;
}

.grid-button:focus {
    outline: 0!important;
}

.control-button {
    border-radius: var(--border-radius);
    margin: var(--border-radius);
    border: none;
    display: list-item;
    outline: 0;
    transition-duration: 0.3s;
    background: rgba(0, 0, 0, var(--opacity));
    color: rgb(255, 255, 255);
    font-size: calc(5 * var(--border-radius));
    width: var(--sidebar-width);
}

.control-button:hover {
    background: rgba(255, 255, 255, var(--opacity));
}

.control-button:active {
    background: rgba(255, 255, 255, calc(var(--opacity) * 2));
}

.info-button {
    border-radius: var(--border-radius);
    margin: var(--border-radius);
    border: none;
    outline: 0;
    transition-duration: 0.3s;
    display: flex;
    flex-direction: column;
    background: none;
    color: rgb(255, 255, 255);
    font-size: calc(5 * var(--border-radius));
    width: var(--sidebar-width);
}

.status-button {
    border-radius: var(--border-radius);
    margin: var(--border-radius);
    border: none;
    outline: 0;
    transition-duration: 0.3s;
    display: flex;
    flex-direction: column;
    background: none;
    color: rgb(128, 128, 128);
    font-size: calc(2 * var(--border-radius));
    width: var(--sidebar-width);
}

.grid-tile {
    position: absolute;
    width: var(--tile-size);
    height: var(--tile-size); 
    float: center;
    background: none;
}

.main-container {
    text-align: center;
    white-space: nowrap;
    padding-top: calc(50vh - 0.5 * (var(--grid-height) * var(--tile-size)) - var(--border-radius));
}

/* override settings on portrait mode: */
@media (orientation: portrait) {

    .main-container {
        white-space: normal;
        padding-top: 10px;
    }

}

.grid-container {
    border-radius: var(--border-radius);
    padding: var(--border-radius);
    margin: auto;
    width: calc(var(--grid-width) * var(--tile-size));
    height: calc(var(--grid-height) * var(--tile-size));
    background: rgba(0, 0, 0, var(--opacity));
    display: inline-block;
    transition-duration: 1s;
}

.sidebar-container {
    border-radius: var(--border-radius);
    padding: var(--border-radius);
    vertical-align: top;
    background: rgba(0, 0, 0, var(--opacity));
    display: inline-flex;
    justify-content: space-between;
    flex-direction:column;
    min-height: calc(var(--grid-height) * var(--tile-size));
    position: relative;
    transition-duration: 1s;
}

/* override settings on portrait mode: */
@media (orientation: portrait) {

    .sidebar-container {
        display: inline-flex;
        justify-content: space-between;
        flex-direction:row;
        min-height: 0;
        min-width: calc(var(--grid-width) * var(--tile-size));
    }

}

.control-container {
    border-radius: var(--border-radius);
    padding: var(--border-radius);
    top: 0;
    background: none;
}

.info-container {
    border-radius: var(--border-radius);
    padding: var(--border-radius);
    bottom: 0;
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    background: none;
    white-space: normal;
}