index.css

text {
    opacity: 0;
    user-select: none;
    -webkit-user-select: none;
    cursor: default;
    pointer-events: none;
}

.filtered text.name,
.contain text.name {
    opacity: 1;
    fill: cyan;
    text-shadow: 2px 2px black;
}

.contain text.name {
    opacity: 0;
}

.contain text.amount {
    opacity: 1;
    fill: white;
    text-shadow: 2px 2px black;
    z-index: 10;
}

text.id {
    opacity: 1;
    fill: LightSkyBlue;
    text-shadow: 2px 2px black;
    z-index: 10;
    font-size: 0.5em;
}

text.mark {
    opacity: 1;
    fill: cyan;
    text-shadow: 1px 1px black;
    font-size: 2em;
}

text.mark.ok {
    fill: greenyellow;
}

text.mark.fail {
    fill: red;
}

circle {
    fill-opacity: 0;
    stroke-opacity: 0;
    stroke: red;
    stroke-width: 5;
}

circle.friendly {
    stroke: greenyellow;
}

circle.visited {
    fill-opacity: 0;
    stroke-opacity: 0;
    stroke-width: 1;
    stroke: black;
}

.filtered circle,
.contain circle,
.hover circle,
.highlight circle {
    fill-opacity: 0;
    stroke-opacity: 0.8;
}

.copy {
    position: absolute;
    bottom: 0;
}

#contents {
    -moz-column-count: 6;
    -webkit-column-count: 6;
    column-count: 6;
}
span.tooltip {
    position: absolute;
    text-align: left;
    padding: 0.5em;
    max-width: 200px;
    font-size: 0.3em;
    background: lightsteelblue;
    border: 0px;
    border-radius: 0.3em;

    user-select: none;
    -webkit-user-select: none;
    cursor: default;
    pointer-events: none;
}