body {
    font-size: 1.2rem;
    @media screen and (min-width: 8.5in) {
        font-size: 1.6rem;
    }
    @media screen and (min-width: 12in) {
        font-size: 2rem;
    }

    text-align: center;
    background: darkblue;
    color: yellow;
}

.source {
    font-family: "Courier New", monospace;
    font-weight: 500;
    font-size: 1.2rem;
    line-height: 1.05;
    color: #131;
    background: #EFE;
}

.main {
    @media screen and (min-width: 8.5in) {
        width: 8.5in;
    }
    @media screen and (min-width: 12in) {
        width: 12in;
    }
    margin: auto;
    text-align: left;
    color: #304;
    background: #edf;
}

p {
    text-align: left;
}

.blockDemo {
    text-align: left;
    display: block;
    background-color: lavenderblush;
}

.inlineDemo {
    display: inline;
    padding: 2em;
    margin: 1em;
    background-color: rgba(36,0,72,70%);
    color: whitesmoke;
}

.inlineBlockDemo {
    display: inline-block;
    padding: 2em;
    margin: 1em;
    background-color: #110055;
    color: whitesmoke;
}

.flexContainer {
    display: flex;
    flex-flow: row nowrap;
    column-gap: 2pt;
    width: 100%;
}

.flexDie {
    display: flex;
    flex: 1 1 256px;
    min-width: 64px;
}

.diceGrid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 2pt;
}

.diceGridTemplate {
    display: grid;
    grid-template-columns: 1fr repeat(3, 2fr);
    grid-template-rows: 1fr repeat(2, 2fr);
    gap: 2pt;
    grid-template:
            ". thd thd thd"
            "lhd die die die"
            "lhd die die die";
}

.diceTopHeader {
    display: grid;
    grid-area: thd;
    grid-template-columns: 1fr 1fr 1fr;
    align-content: center;
    color: wheat;
    background-color: darkblue;
}
.diceTopHeader p {
    text-align: center;
}

.diceLeftHeader {
    display: grid;
    grid-area: lhd;
    grid-template-rows: 1fr 1fr;
    align-content: center;
    color: wheat;
    background-color: darkblue;
    gap: 2pt;
    text-align: center;
    align-items: center;
}

.gridDie {
    display: grid;
    grid-area: die;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 2pt;
}

/*
    columns
 */

.columnDemo {
    column-count: 3;
    column-rule: 1pt dashed #220044;
    column-fill: balance;
    column-gap: 4pt;
}

.left {
    float: left;
    margin-right: 2pt;
}

.right {
    float: right;
    margin-left: 2pt;
}

.absoluteBox {
    position: absolute;
    top: 10pt;
    left: 10pt;
    background-color: rgba(30,30,30,40%);
    color: yellow;
    width: 60pt;
    height: 50pt;
    z-index: 1;
}
.fixedBox {
    position: fixed;
    top: 10pt;
    left: 10pt;
    background-color: #303;
    color: goldenrod;
    width: 60pt;
    height: 50pt;
}

.stickyBox {
    position: sticky;
    top: 0;
    width: 200pt;
    height: 100pt;
    background-color: #020;
    color: greenyellow;
}