increase font size and code contrast

Chapter_8.Rmd

@@ -137,3 +137,5 @@ for (i in seq_along(population_sizes)) {
 mtext("Number of people", side = 2, outer = TRUE, line = 0.2)
 par(old_par)
 ```
+
+If the  skill level is transmitted culturally  from these skilled individual to the next generation, we can then add different type of social transmission process to then get prediction about on the spread (and retention) of skills within the population.

book.css

@@ -93,7 +93,7 @@ body,
 
 .book .book-body .page-wrapper .page-inner section.normal {
   color: var(--ink);
-  font-size: 1.02rem;
+  font-size: 1.5rem;
   line-height: 1.75;
 }
 
@@ -157,7 +157,73 @@ body,
 }
 
 .book .book-body .page-wrapper .page-inner section.normal pre code {
-  color: #e9e2d6;
+  color: #f7f3e8;
+  background: transparent;
+}
+
+.book .book-body .page-wrapper .page-inner section.normal :not(pre) > code {
+  padding: 0.12em 0.35em;
+  color: #7a3526;
+  background: #f1e5d2;
+  border: 1px solid #dfcdb2;
+  border-radius: 3px;
+}
+
+/* High-contrast syntax colours for Pandoc and highlight.js output. */
+.book section.normal pre code .kw,
+.book section.normal pre code .cf,
+.book section.normal pre code .hljs-keyword,
+.book section.normal pre code .hljs-selector-tag {
+  color: #ffd166;
+  font-weight: 600;
+}
+
+.book section.normal pre code .fu,
+.book section.normal pre code .bu,
+.book section.normal pre code .hljs-title,
+.book section.normal pre code .hljs-built_in {
+  color: #73daca;
+}
+
+.book section.normal pre code .st,
+.book section.normal pre code .ch,
+.book section.normal pre code .vs,
+.book section.normal pre code .ss,
+.book section.normal pre code .hljs-string {
+  color: #b8e986;
+}
+
+.book section.normal pre code .dv,
+.book section.normal pre code .bn,
+.book section.normal pre code .fl,
+.book section.normal pre code .cn,
+.book section.normal pre code .hljs-number,
+.book section.normal pre code .hljs-literal {
+  color: #ffad7d;
+}
+
+.book section.normal pre code .co,
+.book section.normal pre code .do,
+.book section.normal pre code .an,
+.book section.normal pre code .cv,
+.book section.normal pre code .hljs-comment {
+  color: #b7c4c1;
+  font-style: italic;
+}
+
+.book section.normal pre code .op,
+.book section.normal pre code .sc,
+.book section.normal pre code .hljs-operator,
+.book section.normal pre code .hljs-punctuation {
+  color: #f4d6a0;
+}
+
+.book section.normal pre code .va,
+.book section.normal pre code .at,
+.book section.normal pre code .dt,
+.book section.normal pre code .hljs-variable,
+.book section.normal pre code .hljs-attr {
+  color: #9ecbff;
 }
 
 .book .book-body .page-wrapper .page-inner section.normal table {