Quick View: Fix font size.

ui/file_manager/file_manager/foreground/elements/files_quick_view.css

Index: ui/file_manager/file_manager/foreground/elements/files_quick_view.css
diff --git a/ui/file_manager/file_manager/foreground/elements/files_quick_view.css b/ui/file_manager/file_manager/foreground/elements/files_quick_view.css
index b19a61734025e5de908595bf9f3bf3093b65b3ea..35bfd5bb916297d33996daceaea513fef6da31c7 100644
--- a/ui/file_manager/file_manager/foreground/elements/files_quick_view.css
+++ b/ui/file_manager/file_manager/foreground/elements/files_quick_view.css
@@ -9,6 +9,8 @@
 
 paper-dialog {
   background-color: transparent;
+  /* Overrides paper-dialog's default font size. */
+  font-size: 100%;
   height: 100%;
   margin: 0;
   padding: 0;
@@ -98,6 +100,7 @@ paper-button:focus:not(:active) {
   --paper-toolbar-background: rgb(40, 42, 45);
   --paper-toolbar-height: 48px;
   color: white;
+  font-size: 108%;
   margin: 0;
   opacity: 0.9;
   padding: 0;
@@ -169,7 +172,6 @@ iron-icon {
 }
 
 .no-preview {
-  font-size: 115%;
   margin-top: 16px;
 }