/* WET-BOEW @title: Details/summary polyfill pre-Modernizr CSS */ summary { // Make sure summary remains visible display: list-item !important; list-style-type: none; // Prevent list bullets from appearing in browsers that lack native details/summary support (e.g. IE/Edge) list-style-type: disclosure-closed; // Show summary arrows in Firefox 49.0+ and future versions of Blink/Webkit visibility: visible !important; } %details-nested-in-hidden-details { details { summary { display: none !important; } } } details { margin-bottom: .25em; summary { border: 1px solid #ddd; border-radius: 4px; color: #295376; padding: 5px 15px; &:focus, &:hover { background-color: transparent; color: #0535d2; text-decoration: underline; } &:focus { outline-style: dotted; outline-width: 1px; } } &[open] { border: 1px solid #ddd; border-radius: 4px; > { summary { border: 0; border-bottom: 1px solid #ddd; border-bottom-left-radius: 0; border-bottom-right-radius: 0; list-style-type: disclosure-open; margin-bottom: .25em; } } } // Prevent FOUC &:not([open]) { @extend %details-nested-in-hidden-details; visibility: hidden; > { // Need details and * to deal with specificity issues details, * { display: none; } } } &.alert { &:not([open]) { visibility: visible; } } .out { @extend %details-nested-in-hidden-details; } } .tabpanels { > { details { &:not([open]) { visibility: visible; } } } } // Prevent FOUC when polyfill is disabled .wb-disable { details { visibility: visible !important; > { *:not(summary) { display: block !important; } } } }