diff --git a/code/html/custom.css b/code/html/custom.css
index 6d5d2dcc..f0d3d89a 100644
--- a/code/html/custom.css
+++ b/code/html/custom.css
@@ -64,3 +64,7 @@ div.hint {
 .template {
     display: none;
 }
+
+.pure-form .center {
+    margin: .5em 0 .2em;
+}
diff --git a/code/html/index.html b/code/html/index.html
index 3497b5b6..c7b3cb69 100644
--- a/code/html/index.html
+++ b/code/html/index.html
@@ -145,7 +145,7 @@
 
                                 <div id="relayTemplate" class="template">
                                     <div class="pure-g">
-                                        <div class="pure-u-1 pure-u-sm-1-4"><label >Relay<span class="relay_id"></span> Status</label></div>
+                                        <label class="pure-u-1 pure-u-sm-1-4">Relay<span class="relay_id"></span> Status</label>
                                         <div class="pure-u-1 pure-u-sm-1-4"><input type="checkbox" class="relayStatus" data="0" /></div>
                                     </div>
                                 </div>
@@ -383,7 +383,8 @@
                                 <div id="idxTemplate" class="template">
                                     <div class="pure-g">
                                         <label class="pure-u-1 pure-u-sm-1-4">Relay<span class="id"></span> IDX</label>
-                                        <input class="pure-u-1 pure-u-sm-1-4 dczIdx" name="dczIdx" type="number" tabindex="0" data="0" /></div>
+                                        <div class="pure-u-1 pure-u-sm-1-8"><input class="pure-u-sm-23-24 dczIdx" name="dczIdx" type="number" min="0" tabindex="0" data="0" /></div>
+                                        <div class="pure-u-1 pure-u-sm-5-8 hint center">Set to 0 to disable notifications.</div>
                                     </div>
                                 </div>