Twenty Ten: Correct the styling of the file block.

This change updates the padding, line height, and text color of the button in the file block,
so that the styling is not overriden by the link styles.

Props poena, sainathpoojary, mai21, parthvataliya, devtanbir, ankitkumarshah, sabernhardt, shailu25.
Fixes #62793.

git-svn-id: https://develop.svn.wordpress.org/trunk@59843 602fd350-edb4-49c9-b593-d223f7449a82

Author: carolinan

src/wp-content/themes/twentyten/blocks.css

@@ -110,6 +110,12 @@ p.has-drop-cap:not(:focus)::first-letter {
 	margin: 0 0 0 0.75em;
 }
 
+.wp-block-file .wp-block-file__button {
+	padding: 0.5em 1em;
+	color: #fff;
+	line-height: 1.5;
+}
+
 /*--------------------------------------------------------------
 3.0 Blocks - Formatting
 --------------------------------------------------------------*/