index.css

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;    
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;    
    font-size: 16px;
}

#map {
    height: 100%;
    width: 100%;
    image-rendering: pixelated;
}

.mouseposition {
    background-color: white;
    padding: 3px;
    text-align: right;
}

.mousepositioncoord {
    min-width: 40px;
    display: inline-block;
}

div.ol-mouse-position {
    background-color: white;
    padding: 6px;
    border-radius: 3px;
    box-shadow: 3px 3px 2px rgba(0, 0, 0, 0.2);
}

.ol-ctx-menu-container {
    font-size: 16px;
}

.ol-scale-step-text {
    font-family: sans-serif;
    font-weight: bold;
    font-size: 14px;
    color: white;
    text-shadow:
        1px 0 0 black,
        0 1px 0 black,
        -1px 0 0 black,
        0 -1px 0 black;
    0px 0px 8px black;
}

.ol-scale-singlebar-odd {
    background: #ddd;
}

.ol-scale-singlebar-even {
    background: #444;
}

.toastify {
    color: black;
    background: yellow;
}

.ol-ctx-menu-container li {
    padding-left: 20px;
}

.menuitem-checked::before {
    content: '☑';
    width: 20px;
    display: inline-block;
    margin-left: -20px;
}

.menuitem-unchecked::before {
    content: '☐';
    width: 20px;
    display: inline-block;
    margin-left: -20px;
}