Fix tab style (#2672)

* custom.css: Set old tab style back

(cherry picked from commit 3053485)

Author: adriendupuis

docs/css/custom.css

@@ -510,11 +510,42 @@ a.external:not(.card):after {
     height: 4px;
 }
 
-.md-typeset .tabbed-labels>label:hover {
+.md-typeset .tabbed-labels > label:hover {
   color: var(--ibexa-dusk-black);
   border-bottom: 2px solid var(--ibexa-dusk-black);
 }
 
+.md-typeset .tabbed-set > input:first-child:checked ~ .tabbed-labels > :first-child,
+.md-typeset .tabbed-set > input:nth-child(2):checked ~ .tabbed-labels > :nth-child(2),
+.md-typeset .tabbed-set > input:nth-child(3):checked ~ .tabbed-labels > :nth-child(3),
+.md-typeset .tabbed-set > input:nth-child(4):checked ~ .tabbed-labels > :nth-child(4),
+.md-typeset .tabbed-set > input:nth-child(5):checked ~ .tabbed-labels > :nth-child(5),
+.md-typeset .tabbed-set > input:nth-child(6):checked ~ .tabbed-labels > :nth-child(6),
+.md-typeset .tabbed-set > input:nth-child(7):checked ~ .tabbed-labels > :nth-child(7),
+.md-typeset .tabbed-set > input:nth-child(8):checked ~ .tabbed-labels > :nth-child(8),
+.md-typeset .tabbed-set > input:nth-child(9):checked ~ .tabbed-labels > :nth-child(9),
+.md-typeset .tabbed-set > input:nth-child(10):checked ~ .tabbed-labels > :nth-child(10),
+.md-typeset .tabbed-set > input:nth-child(11):checked ~ .tabbed-labels > :nth-child(11),
+.md-typeset .tabbed-set > input:nth-child(12):checked ~ .tabbed-labels > :nth-child(12),
+.md-typeset .tabbed-set > input:nth-child(13):checked ~ .tabbed-labels > :nth-child(13),
+.md-typeset .tabbed-set > input:nth-child(14):checked ~ .tabbed-labels > :nth-child(14),
+.md-typeset .tabbed-set > input:nth-child(15):checked ~ .tabbed-labels > :nth-child(15),
+.md-typeset .tabbed-set > input:nth-child(16):checked ~ .tabbed-labels > :nth-child(16),
+.md-typeset .tabbed-set > input:nth-child(17):checked ~ .tabbed-labels > :nth-child(17),
+.md-typeset .tabbed-set > input:nth-child(18):checked ~ .tabbed-labels > :nth-child(18),
+.md-typeset .tabbed-set > input:nth-child(19):checked ~ .tabbed-labels > :nth-child(19),
+.md-typeset .tabbed-set > input:nth-child(20):checked ~ .tabbed-labels > :nth-child(20) {
+    color: var(--md-accent-fg-color);
+}
+
+.js .md-typeset .tabbed-labels:before {
+    background: var(--md-accent-fg-color);
+}
+
+.md-typeset .tabbed-labels--linked > label > a {
+    padding: 0;
+}
+
 div.pills {
     float: right;
 }