fix css problem on underlining links

Author: dragoncoder047

docs/static/css/main.css

@@ -143,7 +143,9 @@ blockquote {
 a {
     color: var(--color-fg);
     --ul-color: var(--color-link);
-    text-decoration: solid var(--ul-color) underline;
+    /* text-decoration: solid var(--ul-color) underline; */
+    /* for some reason underline doesn't work in Safari ?!? */
+    border-bottom: 1px solid var(--ul-color);
 }
 
 a:visited {
@@ -335,4 +337,4 @@ del {
 ::selection {
     color: black;
     background-color: #ff07;
-}
+}

docs/static/css/theme.css

@@ -15,7 +15,7 @@
     --theme-3-darker: darkorange;
     --theme-4: #808;
     --theme-4-darker: #a3a;
-    --color-heading: var(--theme-1);
+    --color-heading: var(--theme-1-lightest);
     --color-link: var(--theme-2);
     --color-link-visited: var(--theme-1);
     --color-open-tab: var(--theme-3);