.ext-tinfobox-helper {
    border: 1px solid #a2a9b1;
    border-radius: 15px;
    background-color: #f8f9fa;
    margin: 1em 0;
    padding: 1.2em;
    padding-top: 0.5em;
}
.ext-tinfobox-helper h2 {
    text-align: right;
    margin-top: -0.3ex;
    margin-right: -0.3em;
    border: none;
    color: #666;
}
.ext-tinfobox-helper h3 {
    font-size: 1em;
}
.ext-tinfobox-helper table {
    margin-left: 0.5em;
    margin-top: 0;
    border-collapse: collapse;
}
.ext-tinfobox-helper td {
    border: 1px solid #ddd;
    padding: 1pt 0.3em;
    font-family: monospace;
    white-space: break-spaces;
}
.ext-tinfobox-helper th:not(:empty) {
    font-size: 0.9em;
    background-color: #eee;
    border: 1px #ddd solid;
    border-radius: 4px;
    padding: 0.2ex 1em;
}
.ext-tinfobox-helper th:nth-child(1) {
    text-align: left;
}
.ext-tinfobox-helper td:nth-child(1) {
    white-space: nowrap;
}
.ext-tinfobox-helper td:nth-child(4).empty {
    border: none;
}
.ext-tinfobox-helper td:nth-child(2).selected {
    background-color: #eef5ee;
}
.ext-tinfobox-helper td:nth-child(3).selected {
    background-color: #eef5ee;
}
.ext-tinfobox-helper td:nth-child(3).nontrivial.selected {
    font-weight: bold;
}
.ext-tinfobox-helper td:nth-child(2).absent {
    font-style: italic;
    font-size: 80%;
    border: none;
    text-align: center;
    user-select: none;
}    
.ext-tinfobox-helper td:nth-child(3).absent {
    font-style: italic;
    font-size: 80%;
    border: none;
    text-align: center;
    user-select: none;
}
.ext-tinfobox-helper ul {
    list-style: none;
}

.ext-tinfobox-tooltip {
    float:left;
    width: 17px;
    height: 17px;
    display: block;
    background-image: url("https://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Breezeicons-actions-22-help-about.svg/17px-Breezeicons-actions-22-help-about.svg.png");
}