92 lines
1.7 KiB
CSS
92 lines
1.7 KiB
CSS
/* https://iamkate.com/code/tree-views/ */
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/* Custom properties */
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.tree {
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--spacing : 1.0rem;
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--radius : 10px;
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}
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/* Padding */
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.tree li {
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display : block;
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position : relative;
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padding-left : calc(2 * var(--spacing) - var(--radius) - 2px + 10px);
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}
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.tree ul {
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margin-left : calc(var(--radius) - var(--spacing));
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padding-left : 0;
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}
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/* Vertical lines */
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.tree ul li {
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border-left : 2px solid #ddd;
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}
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.tree ul li:last-child {
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border-color : transparent;
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}
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/* Horizontal lines */
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.tree ul li::before {
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content : '';
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display : block;
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position : absolute;
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top : calc(var(--spacing) / -2);
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left : -2px;
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width : calc(var(--spacing) + 2px);
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height : calc(var(--spacing) + 1px);
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border : solid #ddd;
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border-width : 0 0 2px 2px;
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}
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/* Summaries */
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.tree summary {
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display : block;
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cursor : pointer;
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}
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.tree summary::marker,
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.tree summary::-webkit-details-marker {
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display : none;
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}
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.tree summary:focus {
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outline : none;
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}
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.tree summary:focus-visible {
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outline : 1px dotted #000;
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}
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/* Markers */
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.tree li::after,
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.tree summary::before {
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content : '';
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display : block;
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position : absolute;
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top : calc(var(--spacing) / 2 - var(--radius));
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left : calc(var(--spacing) - var(--radius) - 1px);
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width : calc(2 * var(--radius));
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height : calc(2 * var(--radius));
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border-radius : 50%;
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background : #ddd;
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}
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/* Expand and collapse buttons */
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.tree summary::before {
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z-index : 1;
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background : #696 url('img/expand-collapse.svg') 0 0;
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}
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.tree details[open] > summary::before {
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background-position : calc(-2 * var(--radius)) 0;
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}
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