diff --git a/static/css/invite_register.css b/static/css/invite_register.css
index f7c757d..bb31176 100644
--- a/static/css/invite_register.css
+++ b/static/css/invite_register.css
@@ -1,31 +1,84 @@
-html, body {
+html,
+body {
   background-color: #23272a;
   color: white;
-  font-family: sans-serif;
+  font: 16px/1 sans-serif;
+
+  padding: 0;
+  margin: 0;
+
+  width: 100%;
+  height: 100%;
+
   display: flex;
   justify-content: center;
   align-items: center;
   flex-flow: column nowrap;
-  margin: 0;
-}
-@media (max-width: 500px) {
-    html,
-    body {
-        display: inherit !important;
-        padding: 1em;
-    }
-
-    main {
-        width: 100%;
-    }
 }
 
-* { box-sizing: border-box; }
-.rounded-thing {
-  border-radius: 5px;
+*,
+*:before,
+*:after {
+  box-sizing: border-box;
+}
+
+#register {
+  width: 30rem;
+  border-radius: 0.5rem;
   background-color: #2c2f33;
-  padding: 10px; 
+  padding: 2rem;
+}
+
+#register h1 {
+  margin: 0 0 2rem;
+}
+
+.form-group {
+  margin: 2rem 0;
+}
+
+.form-group label {
+  display: block;
+  margin-bottom: 0.75rem;
+}
+
+.form-group input {
+  font: inherit;
+  color: inherit;
+
+  border: none;
+  border-radius: 0.25rem;
+  padding: 0.5rem;
+  display: block;
+  width: 100%;
+  background-color: rgba(255, 255, 255, 0.08);
+}
+
+.form-group input:focus {
+  outline: none;
+  box-shadow: 0 0 0 0.15rem #7289da;
+}
+
+input[name='invcode'] {
+  font-family: monospace;
+}
+
+input[type='submit'] {
+  font: inherit;
+  color: inherit;
+  cursor: pointer;
+
+  border: none;
+  border-radius: 0.25rem;
+  display: block;
+  width: 100%;
+  background-color: #7289da;
+  padding: 0.75rem 0;
+}
+
+@media (max-width: 600px) {
+  #register {
+    width: 100% !important;
+    background: none !important;
+  }
 }
-input { padding: 5px; }
-input[type=submit] { padding: 5px; }
-input[type=submit]:hover { background-color: #7298da; padding: 5px; }
diff --git a/static/invite_register.html b/static/invite_register.html
index b071cdf..4a9bb9a 100644
--- a/static/invite_register.html
+++ b/static/invite_register.html
@@ -1,26 +1,37 @@
+<!DOCTYPE html>
 <html>
-
     <head>
+        <meta charset="utf-8">
         <title>litecord: register</title>
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
         <link href="css/invite_register.css" rel="stylesheet">
     </head>
-
     <body>
-        <div style="padding: 10px;"/>
-        <main class="rounded-thing">
-        <h1>register</h1>
-        <form method="post" action="/api/v6/auth/register_inv">
-            <input type="text" name="username" placeholder="your username"/>
-            <br/>
-            <input type="text" name="email" placeholder="your email"/>
-            <br/>
-            <input type="password" name="password" placeholder="your password"/>
-            <br/>
-            <input type="text" name="invcode" placeholder="invite code"/>
+        <main id="register">
+            <h1>register</h1>
+            <form method="post" action="/api/v6/auth/register_inv">
+                <div class="form-group">
+                    <label for="username">username <small>(only alphanumeric or underscore, no spaces)</small></label>
+                    <input type="text" name="username" maxlength=19 minlength=2 pattern="^[a-zA-Z0-9_]+$" placeholder="luna" required>
+                </div>
 
-            <p/><input type="submit" value="register">
-        </form>
+                <div class="form-group">
+                    <label for="email">email</label>
+                    <input type="email" name="email" pattern="^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$" placeholder="luna@blockchain.mail" required>
+                </div>
+
+                <div class="form-group">
+                    <label for="password">password</label>
+                    <input type="password" name="password" minlength=5 required>
+                </div>
+
+                <div class="form-group">
+                    <label for="invcode">invite code</label>
+                    <input type="text" name="invcode" placeholder="4MLsEr" required>
+                </div>
+
+                <input type="submit" value="register">
+            </form>
         </main>
     </body>
-
 </html>
