* {
    --cpicker-size: 540px;
    --toprow-height: 36px;
    --grid-gap: 10px;
}

html {
    background: #707070;
    max-width: calc(2 * var(--cpicker-size));
    margin-left: auto;
    margin-right: auto;
    color: #000;
}

bookpanel {
    display: grid;
    grid-template-rows: auto auto;
    grid-row-gap: 1em;
}

bookpanel > div {
    margin-left: auto;
    margin-right: auto
}

#slider_hue {
    width: calc(2 * var(--cpicker-size));
    appearance: none;
    background: url("chromabar.png");
    background-size: cover;
    margin: 0;
    height: 32px;
}

#slider_hue::-moz-range-thumb {
    appearance: none !important;
    width: 6px;
    height: 32px;
    background: none;
    border: 2px solid white;
    border-radius: 6px;
    box-sizing: content-box;
    box-shadow: 0px 0px 8px rgba(0,0,0,0.26)
}

#slider_hue::-webkit-slider-thumb {
    appearance: none !important;
    width: 6px;
    height: 32px;
    background: none;
    border: 2px solid white;
    border-radius: 6px;
    box-sizing: content-box;
    box-shadow: 0px 0px 8px rgba(0,0,0,0.26)
}

colourbook {
    display: grid;
    grid-template-columns: auto auto;
}

#gradviewL {
    transform: scale(-1, -1);
}

#gradviewR {
    transform: scale(1, -1);
}

#lightness_cursor, #chroma_cursor {
    padding: 0 0.3em;
}

.book_top_row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: var(--toprow-height);
}

#crosshaircontainercontainer {
    grid-column: 1 / span 2;
}

#crosshaircontainer {
    position: absolute;
}

#crosshair {
    position: relative;
    z-index: 100;
    top: 0;
}

.hue_num {
/*     width: var(--cpicker-size); */
    padding: 0;
}

.hue_num > span {
    padding: 50px;
}

.hue_num > span:after {
    padding-left: 0.1ex;
    content: "°";
}


apppanel {
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

docpanel, pagetitle {
    display: block;
}

pagetitle {
    padding: 1em 2em;
    font-weight: 700;
    font-size: 2rem;
    text-align: center;
}

docpanel {
    padding: 1em 2em;
    margin: 4em 2em;
    background: #eee;
    border: 1px solid #334;
    border-radius: 0.5em;
    box-shadow: 0px 6px 24px rgba(0,0,0,0.5);
}

footer {
    padding: 0 1em 0 1em;
    font-size: 0.9rem;
    text-align: center;
}

.gradwrapperwrapper {
    background: #808080;
}

#outcol_swatch {
/*     border: 3px solid #eeeeee; */
}