Remove bulma subheading styling (#347)

* Remove bulma subheading styling

* Add minimal subtitle styling

Author: jarrodmillman

assets/theme-css/bulma.css

@@ -69,7 +69,6 @@
 .level:not(:last-child),
 .message:not(:last-child),
 .progress:not(:last-child),
-.subtitle:not(:last-child),
 .table:not(:last-child),
 .tabs:not(:last-child),
 .title:not(:last-child) {
@@ -592,28 +591,6 @@ a.box:active {
 a.tag:hover {
   text-decoration: underline;
 }
-.subtitle,
-.title {
-  word-break: break-word;
-}
-.subtitle em,
-.subtitle span,
-.title em,
-.title span {
-  font-weight: inherit;
-}
-.subtitle sub,
-.title sub {
-  font-size: 0.75em;
-}
-.subtitle sup,
-.title sup {
-  font-size: 0.75em;
-}
-.subtitle .tag,
-.title .tag {
-  vertical-align: middle;
-}
 .title {
   font-size: 2rem;
   font-weight: 600;
@@ -629,22 +606,6 @@ a.tag:hover {
 .title.is-5 {
   font-size: 1.25rem;
 }
-.subtitle {
-  color: #4a4a4a;
-  font-size: 1.25rem;
-  font-weight: 400;
-  line-height: 1.25;
-}
-.subtitle strong {
-  color: #363636;
-  font-weight: 600;
-}
-.subtitle:not(.is-spaced) + .title {
-  margin-top: -1.25rem;
-}
-.subtitle.is-5 {
-  font-size: 1.25rem;
-}
 .heading {
   display: block;
   font-size: 11px;

assets/theme-css/styles.css

@@ -402,3 +402,8 @@ a.headerlink {
   padding: 0;
   padding-bottom: 1.5rem;
 }
+
+.subtitle {
+  font-style: italic;
+  margin-top: -0.5rem;
+}