* { box-sizing: border-box; padding: 0; margin: 0; }

:root {
    --img: url(../images/border-green-1.png);
    /*--img: url(../images/border-red-1.png);*/
    --bvl: 0px;
    --bvt: 0px;
    --bvb: 0px;
    --bvr: 0px;
    --sv: 18 60 18 60;
    --bir: inherit;
    --ww: 300px;
    --wh: 250px;
    --bc: #f5f5f5;
}

body {
    width: 100vw;
    height: 100vh;
    background-color: bisque;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
}

header {
    background-color: #d49f5e;
    box-shadow: 0px 5px 5px #00000050;

    display: grid;
    /*grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));*/
    grid-template-columns: repeat(5, auto);

    align-items: center;
}

header > div {
    padding: 8px;
    border-right: ridge;
}

header > div:last-child {
    border-right: none;
}

header label {
    display: flex;
    column-gap: 8px;
    align-items: center;
}

header .grid {
    height: 100%;
    display: grid;
    gap: 5px;
}

header .row-2 { grid-template-rows: repeat(2, auto); }
header .row-3 { grid-template-rows: repeat(3, auto); }
header .row-4 { grid-template-rows: repeat(4, auto); }

header .col-2 { grid-template-columns: repeat(2, auto); }
header .col-3 { grid-template-columns: repeat(3, auto); }

header .quad {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto 1fr;
    justify-items: center;
}

header .quad .slices,
header .quad .borders {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, 1fr);
    grid-template-areas: "e1 t t e2" "l l r r" "e3 b b e4";
    column-gap: 5px;
}


header .quad .slices :nth-child(1),
header .quad .borders :nth-child(1) { grid-area: l; }
header .quad .slices :nth-child(2),
header .quad .borders :nth-child(2) { grid-area: t; }
header .quad .slices :nth-child(3),
header .quad .borders :nth-child(3) { grid-area: b; }
header .quad .slices :nth-child(4),
header .quad .borders :nth-child(4) { grid-area: r; }

main {
    position: relative;

    display: grid;
    justify-content: center;
    align-content: center;
}

.demo-window {
    width: var(--ww);
    height: var(--wh);
    background-color: var(--bc);

    /* top | right | bottom | left */
    border-style: solid;
    border-image-source: var(--img);

    border-left-width: var(--bvl);
    border-top-width: var(--bvt);
    border-bottom-width: var(--bvb);
    border-right-width: var(--bvr);
    
    border-image-slice: var(--sv);

    border-image-repeat: var(--bir);
}

.demo-window .filler {
    position: relative;
    width: 100%;
    height: 100%;
    border: 0.5px solid black;
    background-color: rgba(255, 255, 255, 0.5);
}

.map {
    position: absolute;
    left: 10px;
    top: 10px;
    width: 310px;
    height: 180px;
    background-image: var(--img);
    background-color: white;
    z-index: 20;
    opacity: 1;
    visibility: visible;
    transition: all 250ms linear;
}

.map.hide {
    opacity: 0;
    visibility: hidden;
}