Fix font-size changing for code in headings (#1456)

Co-authored-by: Koy <[email protected]>
Co-authored-by: Anix <[email protected]>
Co-authored-by: 沈唁 <[email protected]>

Author: 4 people

src/themes/dark.styl

@@ -99,11 +99,13 @@ body
   border-radius 2px
   color #657b83
   font-family 'Roboto Mono', Monaco, courier, monospace
-  font-size 0.8rem
   margin 0 2px
   padding 3px 5px
   white-space pre-wrap
 
+.markdown-section > :not(h1):not(h2):not(h3):not(h4):not(h5):not(h6) code
+  font-size 0.8rem
+
 .markdown-section pre
   -moz-osx-font-smoothing initial
   -webkit-font-smoothing initial

src/themes/dolphin.styl

@@ -111,11 +111,13 @@ body
   border-radius 2px
   color #e96900
   font-family 'Roboto Mono', Monaco, courier, monospace
-  font-size 0.8rem
   margin 0 2px
   padding 3px 5px
   white-space pre-wrap
 
+.markdown-section > :not(h1):not(h2):not(h3):not(h4):not(h5):not(h6) code
+  font-size 0.8rem
+
 .markdown-section pre
   -moz-osx-font-smoothing initial
   -webkit-font-smoothing initial

src/themes/vue.styl

@@ -130,11 +130,13 @@ body
 .markdown-section code
   border-radius 2px
   color #e96900
-  font-size 0.8rem
   margin 0 2px
   padding 3px 5px
   white-space pre-wrap
 
+.markdown-section > :not(h1):not(h2):not(h3):not(h4):not(h5):not(h6) code
+  font-size 0.8rem
+
 .markdown-section pre
   padding 0 1.4rem
   line-height 1.5rem