Create treestyletabs.md

firefox/treestyletabs.md

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+# Tree Style Tabs
+
+This is a recreation (and better) version of my pseudo-popular Vivaldi vertical tab integration, for tree style tabs in firefox. 
+
+```
+/* Hide .twisty and adjust margins so favicons have 7px on left. */
+.tab .twisty {
+	visibility: hidden;
+	margin-left: -8px;
+  display: none;
+}
+
+tab-item:hover {
+  background:    var(--in-content-box-background-hover) !important;
+  opacity: 1;
+}
+
+
+/* Push tab labels slightly to the right so they're completely hidden in collapsed state */
+.tab .label {
+	font-size: 16px;
+  	padding-left: 5px
+}
+
+.tab:not(:hover) > .closebox {
+  display: none;
+}
+
+.closebox:hover {
+  font-weight: 900;
+}
+
+.tab, .tabs, body, #background {
+  background: #F5F6F7; /* #F5F6F7; */
+}
+
+
+.favicon {
+  --favicon-size: 21px !important;
+  margin: 0;
+  padding: 0 !important;
+  --svg-small-icon-size: var(--favicon-size);
+}
+tab-item {
+  border: 1px solid transparent !important;
+  height: auto !important;
+  position: relative !important;
+  margin: 0px !important;
+  font-size: 13px;
+  background: none !important;
+  overflow: hidden !important;
+  text-align: center;
+  box-shadow: none !important;
+  border-radius: 5px;
+  margin-bottom: 11px !important;
+  margin: 10px !important;
+  padding: 5px !important;
+  margin-right: 12.5px !important;
+  margin-left: 12px !important;
+}
+.tab .label {
+  font-size: 13px !important;
+}
+#tabbar-container:not(:hover) {
+  width: 58px;
+  /*! margin: 2px; */
+}
+#all-tabs {
+}
+#tabbar {
+}
+#tabbar:hover {
+  max-width: 100%;
+}
+#tabbar:not(:hover) tab-item {
+  overflow: hidden !important;
+  width: 100%;
+  width: auto;
+  text-align: center;
+}
+tab-item:not(:hover) {
+  /*! display: none; */
+}
+tab-item .label, tab-item .highlighter, tab-item .contextual-identity-marker, tab-item .extra-items-container, tab-item .counter {
+  /*! display: none; */
+}
+tab-item.active {
+  background-color: var(--in-content-box-background) !important;
+  box-shadow: 0px 5px 10px var(--in-content-box-background-active) !important;
+}
+
+:root .tab .highlighter::before {
+    display: none;
+}
+
+.after-tabs button {
+border: none;
+    border-top-color: currentcolor;
+    border-top-style: none;
+    border-top-width: medium;
+box-shadow: none;
+border-top: 1px solid var(--in-content-border-color);
+padding: 10px;
+}
+
+.after-tabs button:hover {
+    background: var(--in-content-box-background-hover) !important;
+    opacity: 1;
+    border-radius: 5px;
+}
+
+#tabbar:hover [data-level="1"] {
+    margin-left: 22px !important;
+}
+
+#tabbar:hover [data-level="2"] {
+    margin-left: 32px !important;
+}
+
+#tabbar:hover [data-level="3"] {
+    margin-left: 42px !important;
+}
+
+#tabbar:hover [data-level="4"] {
+    margin-left: 52px !important;
+}
+
+#tabbar:hover [data-level="5"] {
+    margin-left: 62px !important;
+}
+
+#tabbar:hover [data-level="6"] {
+    margin-left: 72px !important;
+}
+
+#tabbar:hover [data-level="7"] {
+    margin-left: 82px !important;
+}
+
+#tabbar:hover [data-level="8"] {
+    margin-left: 82px !important;
+}
+```