Make header and footer/form work without overflowing

css/popup.css

@@ -31,20 +31,21 @@ html {
 body {
   margin:0;
   padding:0;
-  border:0;     /* This removes the border around the viewport in old versions of IE */
+  border:0;
   width:100%;
   height: 100%;
   min-width:400px;      /* Minimum width of layout - remove line if not required */
-          /* The min-width property does not work in old versions of Internet Explorer */
 }
 /* column container */
 .colmask {
-  position:relative;  /* This fixes the IE7 overflow hidden bug */
+  position:relative;
   clear:both;
   float:left;
-  width:100%;     /* width of whole page */
+  width:100%;         /* width of whole page */
   height: 100%;
   overflow:hidden;    /* This chops off any overhanging divs */
+  padding-top: 50px;
+  box-sizing: border-box;
 }
 /* common column settings */
 .colleft {
@@ -52,7 +53,6 @@ body {
   width:100%;
   height: 100%;
   position:relative;
-  border-right: 2px solid #acdbf5;
 }
 .col1,
 .col2 {
@@ -73,32 +73,38 @@ body {
 .leftmenu .col2 {
   width:28%;          /* left column content width (column width minus left and right padding) */
 }
+
+header {
+  position: fixed;
+  width: 100%;
+  box-sizing: border-box;
+  padding: 5px 0;
+  height: 50px;
+  background-color: #7fd0ed;
+}
 /* end layout */
 
-/*
-#sidebar {
-  float: left;
-  width: 30%;
-  padding: 1em;
-}
-
 #main {
-  margin-left: 35%;
-  padding: 1em;
+  box-sizing: border-box;
+  padding-bottom: 100px;
+  height: 100%;
   border-left: 2px solid #acdbf5;
 }
-*/
-
+#main form {
+  position: absolute;
+  width: 100%;
+  padding: 1em;
+  bottom: 0;
+  right: 0;
+  box-sizing: border-box;
+  height: 100px;
+  background-color: #ddd;
+}
 .container {
-  max-width: 960px;
   margin: auto;
   padding: 0 1em;
 }
 
-header {
-  padding: 5px 0;
-  background-color: #7fd0ed;
-}
 
 label {
   float: left;

js/views/message_list_view.js

@@ -9,7 +9,7 @@ var Whisper = Whisper || {};
     itemView: Whisper.MessageView,
 
     render: function() {
-      $('#main').html('').append(this.el);
+      $('#main .message-container').html('').append(this.el);
     }
   });
 })();

popup.html

@@ -37,6 +37,11 @@
 					<div id="listener"></div>
 					<div id="log"></div>
 				</div>
+				<div class='message-container'></div>
+				<form id="new-message" class='clearfix'>
+					<input id="send_numbers" type='text' placeholder="+xxxxxxxxxx">
+					<input type=submit id="compose-message" class='btn btn-square' value='>'>
+				</form>
 			</div>
 			<div id='sidebar' class="col2">
 				<form id="send" class='clearfix'>