chore: reset browser styles when using blockquote class

Author: J-Sek

packages/docs/src/pages/en/styles/content.md

@@ -21,7 +21,8 @@ Vuetify has custom styling for multiple standard elements.
 
 ## Block quote
 
-> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Harum maiores modi quidem veniam, expedita quis laboriosam, ullam facere adipisci, iusto, voluptate sapiente corrupti asperiores rem nemo numquam fuga ab at. {.blockquote}
+> Lorem ipsum dolor sit amet, consectetur adipisicing elit. Harum maiores modi quidem veniam, expedita quis laboriosam, ullam facere adipisci, iusto, voluptate sapiente corrupti asperiores rem nemo numquam fuga ab at.
+{.blockquote}
 
 ## Paragraphs
 

packages/vuetify/src/styles/elements/_blockquote.sass

@@ -3,6 +3,7 @@
 
 @include tools.layer('components')
   .blockquote
+    margin: 0
     padding: settings.$spacer*4 0 settings.$spacer*4 settings.$spacer*6
     font-size: settings.$blockquote-font-size
     font-weight: settings.$blockquote-font-weight