Add DOI to bibtex citation; minor style fix

src/helpers/bibtex.js

@@ -28,6 +28,7 @@ export function serializeFrontmatterToBibtex(frontMatter) {
   title = {${frontMatter.title}},
   journal = {${frontMatter.journal.title}},
   year = {${frontMatter.publishedYear}},
-  note = {${frontMatter.url}}
+  note = {${frontMatter.url}},
+  doi = {${frontMatter.doi}}
 }`;
 }

src/styles/styles-base.css

@@ -105,14 +105,16 @@ figure svg text,
 figure svg tspan {
 }
 
-figcaption {
+figcaption,
+.figcaption {
   color: rgba(0, 0, 0, 0.6);
   font-size: 12px;
   line-height: 1.5em;
 }
 
 @media(min-width: 1024px) {
-figcaption {
+figcaption,
+.figcaption {
     font-size: 13px;
   }
 }