add spacing

docs/_includes/default.njk

@@ -81,7 +81,7 @@
       </a>
 
       {# Theme selector #}
-      <sl-dropdown id="theme-selector" placement="bottom-end">
+      <sl-dropdown id="theme-selector" placement="bottom-end" distance="3">
         <sl-button slot="trigger" size="small" variant="text" caret title="Press \ to toggle">
           <sl-icon class="only-light" name="sun-fill"></sl-icon>
           <sl-icon class="only-dark" name="moon-fill"></sl-icon>