properly apply site wrap classes to style wide version

fixes #12

incorporealcms/static/css/base.css

@@ -11,16 +11,15 @@ body {
     -webkit-text-size-adjust: 100%;
 }
 
-.site-wrap {
+.site-wrap-normal-width {
     max-width: 70pc;
-    min-height: 100vh;
-    margin: 0;
-    margin-left: auto;
-    margin-right: auto;
 }
 
-.site-wrap-wide {
-    max-width: 95pc;
+.site-wrap-double-width {
+    max-width: 140pc;
+}
+
+.site-wrap {
     min-height: 100vh;
     margin: 0;
     margin-left: auto;

incorporealcms/templates/base-wide.html

@@ -1,2 +1,2 @@
 {% extends "base.html" %}
-{% block site_class %}class="wide-site-wrap"{% endblock %}
+{% block site_class %}class="site-wrap site-wrap-double-width"{% endblock %}

incorporealcms/templates/base.html

@@ -10,7 +10,7 @@
 <link rel="stylesheet" href="{{ url_for('static', filename=user_style) }}">
 <link rel="icon" href="{% if config.FAVICON %}{{ config.FAVICON }}{% else %}{{ url_for('static', filename='img/favicon.png') }}{% endif %}">
 
-<div {% block site_class %}class="site-wrap"{% endblock %}>
+<div {% block site_class %}class="site-wrap site-wrap-normal-width"{% endblock %}>
     {% block header %}
     <div class="header">
         <div class="nav">