Merge pull request #1147 from HerbertHe/patch-1

fix: rendering cover width bug

Author: anikethsaha

src/themes/basic/_coverpage.styl

@@ -4,6 +4,7 @@ section.cover
   background-repeat no-repeat
   background-size cover
   height 100vh
+  width 100vw
   display none
 
   &.show