add style

assets/sass/_theme/blocks/sound.sass

+.block-sound
+    audio
+        width: 100%
\ No newline at end of file

assets/sass/_theme/hugo-osuny.sass

@@ -50,6 +50,7 @@
 @import "blocks/posts"
 @import "blocks/programs"
 @import "blocks/sitemap"
+@import "blocks/sound"
 @import "blocks/summary"
 @import "blocks/testimonials"
 @import "blocks/timeline"