Update css, remove mastodon and bluesky links

Author: Susan Vanderplas

_quarto.yml

@@ -39,12 +39,6 @@ book:
       - icon: github
         href: "https://github.com/srvanderplas"
         aria-label: GitHub
-      - icon: mastodon
-        href: "https://datavis.social/%40srvanderplas"
-        aria-label: Mastodon
-      - icon: bluesky
-        href: "https://%40srvanderplas.bsky.social"
-        aria-label: Bluesky
   comments:
     giscus:
       repo: srvanderplas/stat-computing-r-python

build_deps/style.css

@@ -1,4 +1,24 @@
 /*____Code Chunks____*/
+.sr-only {
+    border: 0;
+    clip: rect(0,0,0,0);
+    height: 1px;
+    margin: -1px;
+    overflow: hidden;
+    padding: 0;
+    position: absolute;
+    width: 1px;
+}
+
+/* https://stackoverflow.com/questions/5990223/how-to-set-alink-height-width-with-css */
+/* https://www.w3.org/TR/selectors-4/#relational */
+
+a:has(>i){
+  display: block;
+  min-width: 24px;
+  min-height: 24px;
+}
+
 
 .sourceCode pre {
   margin: 0 !important; /* makes space above and below symmetrical*/