Updated gallery style in SW theme

boards/static/css/sw/base_page.css

@@ -357,6 +357,13 b' li {'
     margin-bottom: 1em;
 }
 
+.gallery_image {
+    padding: 4px;
+    margin: .5em 0 0 1ex;
+    text-align: center;
+    vertical-align: top;
+}
+
 .swappable-form-full > form {
     display: table;
     width: 100%;