Set project logo maximum widths

Issue #26

assets/sass/pages/_projects.sass

@@ -1,12 +1,18 @@
 .project
-    &--company__has-logo
+    &__company--has-logo
         a:link,
         a:hover
             border-bottom: 0
             display: block
 
         img
-            max-height: 50px
+            max-width: 75%
+
+            +breakpoint($screen-sm)
+                max-width: 50%
+
+            +breakpoint($screen-md)
+                max-width: 33.3%
 
     &__website
         @extend .btn

source/_layouts/project.html.twig

@@ -1,5 +1,7 @@
 {% extends 'page' %}
 
+{% block body_classes 'page--project' %}
+
 {% block content_wrapper %}
     {% if page.image -%}
         <img src="/assets/images/projects/{{ page.image.name ?: page.image }}" alt="{{ page.image.alt }}">