Add line height offset for label inside header

src/definitions/elements/label.less

@@ -114,6 +114,10 @@ a.ui.label {
        Coupling
 --------------------*/
 
+.ui.header > .ui.label {
+  margin-top: @lineHeightOffset;
+}
+
 /* Remove border radius on attached segment */
 .ui.attached.segment > .ui.top.left.attached.label,
 .ui.bottom.attached.segment > .ui.top.left.attached.label  {

src/themes/default/elements/label.variables

@@ -14,12 +14,14 @@
 @backgroundColor: #E8E8E8;
 @backgroundImage: none;
 @labelTextColor: rgba(0, 0, 0, 0.6);
-@verticalPadding: 0.6em;
-@horizontalPadding: 0.8em;
+@verticalPadding: 0.5833em;
+@horizontalPadding: 0.833em;
 @borderRadius: @absoluteBorderRadius;
 @textTransform: none;
 @fontWeight: bold;
 
+@lineHeightOffset: -(@verticalPadding / 2);
+
 @labelTransitionDuration: @transitionDuration;
 @labelTransitionEasing: @transitionEasing;
 @transition: background @labelTransitionDuration @labelTransitionEasing;
@@ -28,6 +30,7 @@
 @groupVerticalMargin: 0.75em;
 @groupHorizontalMargin: 0.5em;
 
+
 /*-------------------
         Parts
 --------------------*/