Fix long title style

sass/css/_content.scss

@@ -28,6 +28,10 @@ h1:before, h1:after {
 	height: 4px;
 }
 
+h1 span {
+	max-width: 640px;
+}
+
 h2 {
 	border-bottom: 2px solid c.$main_color;
 }

templates/blog.html

@@ -52,7 +52,7 @@
 {% endblock main_begin %}
 
 {% block main %}
-<h1>{{page.title | safe}}</h1>
+<h1><span>{{page.title | safe}}</span></h1>
 <small class="article-date">{{page.date}}</small><br/>
 <small class="article-tags">{% for tag in page.taxonomies.tags %}<a href="/{{macros::langurl()}}tags/{{tag}}">{{tag}}</a>{% if not loop.last %}, {% endif %}{% endfor %}</small>