diff --git a/index.html b/index.html
index 4799010..39aff03 100644
--- a/index.html
+++ b/index.html
@@ -43,9 +43,10 @@
                     </div>
                 </form>
 
-                <br />
-                <br />
+                <hr />
                 Current H3 resolution: <b>{{ currentH3Res }}</b>
+                <hr />
+                <small class="text-muted">Tip: Clicking an H3 cell will copy its id to the clipboard.</small>
             </div>
 
         </div>
diff --git a/style.css b/style.css
index 8e38206..cf26b5f 100644
--- a/style.css
+++ b/style.css
@@ -11,20 +11,15 @@ html, body {
 .toolbox {
     position: fixed;
     width: 250px;
-    height: 200px;
     top: 16px;
     right: 16px;
     border: 1px solid #ccc;
     background-color: #fff;
-    opacity: 0.7;
+    opacity: 0.85;
     z-index: 1000;
     padding: 16px;
 }
 
-.toolbox input {
-    width: 100%;
-}
-
 .h3Text {
     font-size: 16pt;
     font-weight: bold;