refactor: update styles

Author: mrholek

src/scss/_custom.scss

@@ -1,9 +1,14 @@
-// Here you can add other styles
+// Custom styles for this theme
+
 .header > .container-fluid,
 .sidebar-header {
   min-height: calc(4rem + 1px); // stylelint-disable-line function-disallowed-list
 }
 
+.sidebar-brand-full {
+  margin-left: 3px;
+}
+
 .sidebar-toggler {
   @include ltr-rtl("margin-left", auto);
 }
@@ -30,4 +35,4 @@
 
 .footer {
   min-height: calc(3rem + 1px); // stylelint-disable-line function-disallowed-list
-}
+}