diff --git a/TC1/http_server/web/demo.html b/TC1/http_server/web/demo.html
index e40d611..8433a76 100644
--- a/TC1/http_server/web/demo.html
+++ b/TC1/http_server/web/demo.html
@@ -63,7 +63,7 @@
         </header>
         <nav class="demo-navigation mdl-navigation mdl-color--blue-grey-800">
           <a class="mdl-navigation__link mdl-nav-active" href="javascript:ShowPage(1);"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">home</i>Home</a>
-          <a class="mdl-navigation__link" href="javascript:ShowPage(2);"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">inbox</i>Config</a>
+          <a class="mdl-navigation__link" href="javascript:ShowPage(2);"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">settings</i>Config</a>
           <a class="mdl-navigation__link" href="javascript:ShowPage(3);"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">delete</i>Timed Task</a>
           <a class="mdl-navigation__link" href="javascript:ShowPage(4);"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">report</i>System Status</a>
           <a class="mdl-navigation__link" href="javascript:ShowPage(5);"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">forum</i>OTA</a>
diff --git a/TC1/http_server/web/styles.css b/TC1/http_server/web/styles.css
index b8b75e0..593adb5 100644
--- a/TC1/http_server/web/styles.css
+++ b/TC1/http_server/web/styles.css
@@ -213,30 +213,10 @@ _:-ms-input-placeholder, :root .demo-graph {
       -ms-flex-align: center;
           align-items: center;
 }
-/* icon.css */
-@font-face {
-  font-family: 'Material Icons';
-  font-style: normal;
-  font-weight: 400;
-  src: url(https://fonts.gstatic.com/s/materialicons/v48/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2) format('woff2');
-}
-.material-icons {
-  font-family: 'Material Icons';
-  font-weight: normal;
-  font-style: normal;
-  font-size: 24px;
-  line-height: 1;
-  letter-spacing: normal;
-  text-transform: none;
-  display: inline-block;
-  white-space: nowrap;
-  word-wrap: normal;
-  direction: ltr;
-  -webkit-font-feature-settings: 'liga';
-  -webkit-font-smoothing: antialiased;
-}
 /* zogodo */
-.page{display:none;}
+.page {
+  display:none;
+}
 .mdl-nav-active {
     background-color: #00BCD4;
     color: #37474F;