Improve the toolbar style and the way the userlist is displayed

www/slide/inner.html

@@ -41,6 +41,10 @@
             box-sizing: border-box;
             position: relative;
         }
+        body {
+            display: flex;
+            flex-flow: column;
+        }
         #bar > button {
             margin: 5px;
         }
@@ -111,21 +115,11 @@
               html {
         height: 100%;
       }
-      body {
-        height: 100%;
-        margin: 0px;
-      }
       .CodeMirror {
-        position: absolute;
-        top: 25px;
-        bottom: 0px;
-        left: 0px;
-        right: 0px;
-        height: auto;
+        height: 100%;
       }
       #cme_toolbox {
         font: 12px Arial,Helvetica,Tahoma,Verdana,sans-serif;
-        height: 25px;
         background: -webkit-linear-gradient(#EEEEEE, #DADADA); /* For Safari 5.1 to 6.0 */
         background: -o-linear-gradient(white, #DDDDDD); /* For Opera 11.1 to 12.0 */
         background: -moz-linear-gradient(white, #DDDDDD); /* For Firefox 3.6 to 15 */