fix: exclude s in the playground

Author: HerringtonDarkholme

website/src/style.css

@@ -7,7 +7,7 @@
     Remove all the styles of the "User-Agent-Stylesheet", except for the 'display' property
     - The "symbol *" part is to solve Firefox SVG sprite bug
  */
-*:where(:not(html, iframe, canvas, img, svg, video, audio):not(svg *, symbol *)) {
+*:where(:not(html, iframe, canvas, img, svg, video, audio, s):not(svg *, symbol *)) {
     all: unset;
     display: revert;
 }
@@ -108,7 +108,7 @@ html.dark {
   --theme-highlight4: #a8a17024;
 }
 
-a {
+.playground a {
   font-weight: 500;
   color: #646cff;
   text-decoration: inherit;