Improve styles

Related #17.

Author: zalmoxisus

src/browser/views/devpanel.jade

@@ -4,6 +4,7 @@ html
     head
         meta(charset='UTF-8')
     title Redux DevTools
+    include ./includes/style.jade
 
     body
         #root

src/browser/views/includes/style.jade

@@ -0,0 +1,19 @@
+style.
+  html {
+    min-width: 350px;
+    min-height: 300px;
+  }
+  body {
+    position: fixed;
+    overflow: hidden;
+    height: 100%;
+    width: 100%;
+    margin: 0;
+    padding: 0;
+  }
+  #root {
+    height: 100%;
+  }
+  #root > div {
+    height: 100%;
+  }

src/browser/views/window.jade

@@ -4,11 +4,7 @@ html
   head
     meta(charset='UTF-8')
   title Redux DevTools
-  style.
-    #root {
-      min-width: 300px;
-      min-height: 300px;
-    }
+  include ./includes/style.jade
 
   body
     #root