style.css: highlight targets

On pages like participating.html, it was unclear what was happening
when somebody clicked on a link that went to a section near the bottom
of the page — the page would jump down, but it wasn't obvious what
part in particular they were supposed to be looking at.

So let's highlight them to make it really obvious.

Signed-off-by: Alyssa Ross <hi@alyssa.is>

1 files changed, 5 insertions, 0 deletions

diff --git a/style.css b/style.css
index e9fd751..f4d4c4e 100644
--- a/style.css
+++ b/style.css
@@ -1,4 +1,5 @@
 /* SPDX-FileCopyrightText: 2019 Alyssa Ross <hi@alyssa.is> */
+/* SPDX-FileCopyrightText: 2022 Unikie */
 /* SPDX-License-Identifier: GPL-3.0-or-later */
 
 /*
@@ -20,3 +21,7 @@ h1, h2, h3, h4 {
 var {
 	font-family: serif;
 }
+
+:target {
+    background: yellow;
+}