diff --git a/index.css b/index.css
index 7c384e8..9fdd6fb 100644
--- a/index.css
+++ b/index.css
@@ -12,10 +12,27 @@ li {
 #button {
     width: 100px;
     height: 30px;
-    background: pink;
+    background: lightgreen;
     font-size: large;
     font-family: Futura;
 }
 .glink {
     font-family: "Avenir Next"
+}
+#error {
+    display: none;
+    color: red;
+    font-family: "Big Caslon"
+}
+#error.visible {
+    display: block;
+}
+input.invalid {
+    border-color: red;
+}
+input.valid {
+    border-color: green;
+}
+.mandatory {
+    color: red;
 }
\ No newline at end of file
diff --git a/index.html b/index.html
index 0c5321b..43f5a39 100644
--- a/index.html
+++ b/index.html
@@ -2,20 +2,19 @@
 <head>
     <title>GLink</title>
     <link rel="stylesheet" href="index.css">
-<!--    <script src="./index.js"></script>-->
+
 </head>
 <body>
 <div id="root">
     <h1>Link Shortener</h1>
     <form id="form">
-        <label for="URL">URL: </label>
+        <label for="url">URL:</label><span class="mandatory">*</span>
         <input type="text" name="url" id="URL" value="example.com" required><br><br>
 
-        <label for="labels">GLink: </label>
-        <label for="GLink" id="labels" class="glink">glink.zip/</label>
-        <input type="text" name="glink" id="GLink" class="glink" value="exampleWebsite" required>
+        <label for="labels">GLink:</label><span class="mandatory">*</span>
+        <label for="GLink" id="labels" class="glink">glink.zip/</label><input type="text" name="glink" id="GLink" class="glink" value="exampleWebsite" required>
 
-        <span class="error" aria-live="polite"></span>
+        <span role="alert" id="error" aria-hidden="true">Invalid URL</span>
 
         <br><br>
         <input type="submit" id="button" value="Zip It!">
@@ -41,6 +40,7 @@
 <!--    <div id="generate">-->
 <!--        <button id="zip" onclick="window.location.href = 'www.google.com';"></button>-->
 <!--    </div>-->
+    <script src="./result.js"></script>
 </div>
 </body>
 </html>
\ No newline at end of file
diff --git a/result.js b/result.js
index 43bba0e..cf6ad95 100644
--- a/result.js
+++ b/result.js
@@ -5,15 +5,18 @@ function validate(e) {
 
     const url = document.getElementById("URL");
     const glink = document.getElementById("GLink");
-    if (!url) {
-        /* Flag */
-    }
+    // if (!url) {
+    //     /* Flag */
+    // }
     let valid = true;
     const domainExp = new RegExp("http(s)*:\\/\\/[a-zA-Z0-9\\-]+(\\.[a-zA-Z0-9\\-]+)+");
-    var count = 0;
-    var index = -1;
+    const filepathExp = new RegExp("[a-zA-Z]+");
+    let count = 0;
+    let index = -1;
+    let domain = "";
+    let filepath = "";
     for (let i=0; i < url.value.length; i++) {
-        if (url.length.charAt(i) == '/') {
+        if (url.value.charAt(i) == '/') {
             count++;
         }
         if (count == 3) {
@@ -21,10 +24,46 @@ function validate(e) {
             break;
         }
     }
-    if (count == 3) {
-        const domain = url.value.substring(0, index);
-        const filepath = url.value.substring(index, url.value.length - 1);
+    if (count >= 3) {
+        domain = url.value.substring(0, index);
+        if (index == url.value.length - 1) {
+            filepath = url.value.charAt(index);
+        } else {
+            filepath = url.value.substring(index, url.value.length - 1);
+        }
         alert("Domain is " + domain + " filepath is " + filepath);
+    } else {
+        domain = url.value;
+    }
+    console.log(domain);
+    if (domain.match(domainExp)) {
+        const error = document.getElementById("error");
+        if (error.classList.contains("visible")) {
+            error.classList.remove("visible");
+        }
+        //error.classList.add("hidden");
+        if (url.classList.contains("invalid")) {
+            url.classList.remove("invalid");
+        }
+        url.classList.add("valid");
+        //url.classList.add("valid");
+        error.setAttribute('aria-hidden', true);
+        error.setAttribute('aria-invalid', false);
+        console.log("Valid");
+        return valid;
+    } else {
+
+        /*flag*/
+        const error = document.getElementById("error");
+        error.classList.add("visible");
+
+        //error.classList.add("hidden");
+        if (url.classList.contains("valid")) {
+            url.classList.remove("valid");
+        }
+        url.classList.add("invalid");
+        error.setAttribute('aria-hidden', false);
+        error.setAttribute('aria-invalid', true);
     }
 
 }
\ No newline at end of file
