Add wrap figures

scss/partials/_base.scss

@@ -307,3 +307,20 @@ span[id*='MathJax-Span']{
     border-radius:.1em;
 }
 
+.figure.wrap-right {
+    float: right;
+    &:after {
+        content:'';
+        display:block;
+        clear: both;
+    }
+}
+
+.figure.wrap-left {
+    float: left;
+    &:after {
+        content:'';
+        display:block;
+        clear: both;
+    }
+}

scss/partials/_headlines.scss

@@ -22,12 +22,14 @@ h1{
 }
 
 h2{
+    clear: both; // used if float is present before heading
     font-size:150%;
     margin-bottom: 1em;
     font-weight: $bold;
 }
 
 h3{
+    clear: both;
     font-size:125%;
     margin-bottom: 0.5em;
 }