update & unify the navbars heights

src/components/nav_panel/nav_panel.vue

@@ -117,8 +117,11 @@
 
   a {
     display: block;
+    box-sizing: border-box;
     align-items: stretch;
-    padding: 0.9em 1em;
+    height: 3.5em;
+    line-height: 3.5em;
+    padding: 0 1em;
 
     &:hover {
       background-color: $fallback--lightBg;

src/components/side_drawer/side_drawer.vue

@@ -333,8 +333,8 @@
     box-sizing: border-box;
     display: block;
     height: 3em;
-    line-height: 2em;
-    padding: 0.5em 0.7em;
+    line-height: 3em;
+    padding: 0 0.7em;
 
     &:hover {
       background-color: $fallback--lightBg;