added separate stylesheet and moved common js to a file.

sd-card/html/common.js

@@ -0,0 +1,31 @@
+ 
+var basepath = "http://192.168.178.22";
+        
+function LoadHostname() {
+    _basepath = getbasepath(); 
+
+
+    var xhttp = new XMLHttpRequest();
+    xhttp.addEventListener('load', function(event) {
+        if (xhttp.status >= 200 && xhttp.status < 300) {
+            hostname = xhttp.responseText;
+                document.title = hostname + " - jomjol - AI on the edge";
+                document.getElementById("id_title").innerHTML  = "Digitizer - AI on the edge - " + hostname;
+        } 
+        else {
+                console.warn(request.statusText, request.responseText);
+        }
+    });
+
+//     var xhttp = new XMLHttpRequest();
+    try {
+            url = _basepath + '/version?type=Hostname';     
+            xhttp.open("GET", url, true);
+            xhttp.send();
+
+    }
+    catch (error)
+    {
+//               alert("Loading Hostname failed");
+    }
+}

sd-card/html/style.css

@@ -0,0 +1,98 @@
+body, html {
+    width: 100%; 
+    height: 100%; 
+    margin: 0px 0px 0px 2px; 
+    padding: 0; 
+    font-family: arial;
+    width: fit-content;
+}
+
+.main {
+    display: flex; 
+    width: 100%; 
+    height: 100%; 
+    flex-direction: column; 
+    overflow: hidden;
+}
+
+.iframe {
+    flex-grow: 1;
+    margin: 5px 7px 4px 0px; 
+    padding: 0; 
+    border: 2px solid black
+}
+
+h1 {
+    font-size: 2em; 
+    margin-block-end: 0.3em;
+}
+
+h2 {
+    font-size: 1.5em;
+    margin-block-start: 0.3em;
+}
+
+h3 {
+    font-size: 1.2em;
+}
+
+p {
+    font-size: 1em;
+}
+
+ul {
+    list-style-type: none;
+    margin: 0;
+    padding: 0;
+    overflow: hidden;
+    background-color: #333;
+    width:1000px;
+}
+
+li {
+    float: left;
+    font-family: arial;
+    font-size: 18px;
+}
+
+li a, .dropbtn {
+    display: inline-block;
+    color: white;
+    text-align: center;
+    padding: 14px 16px;
+    text-decoration: none;
+}
+
+li a:hover, .dropdown:hover .dropbtn {
+    background-color: red;
+}
+
+li.dropdown {
+    display: inline-block;
+}
+
+.dropdown-content {
+    display: none;
+    position: absolute;
+    background-color: #f9f9f9;
+    min-width: 160px;
+    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
+    z-index: 1;
+    font-family: arial;
+}
+
+.dropdown-content a {
+    color: black;
+    padding: 12px 16px;
+    text-decoration: none;
+    display: block;
+    text-align: left;
+}
+
+.dropdown-content a:hover {
+    background-color: #f1f1f1;
+}
+
+.dropdown:hover .dropdown-content {
+    display: block;
+}