From 5c7a4002dd91b99e61a90322872ed4eb2fd5144a Mon Sep 17 00:00:00 2001
From: Denis Ah-Kang <denis@w3.org>
Date: Tue, 10 Oct 2023 15:33:56 +0400
Subject: [PATCH] add algorithm block border

---
 src/base.css | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/base.css b/src/base.css
index e921536..0fac1c2 100644
--- a/src/base.css
+++ b/src/base.css
@@ -847,6 +847,25 @@
 		padding-right: 0em;
 	}
 
+	.algorithm:not(.heading) {
+		padding: .5em;
+		border: thin solid #ddd;
+		border-radius: .5em;
+		margin: .5em calc(-0.5em - 1px);
+	}
+
+	.algorithm:not(.heading) > :first-child {
+		margin-top: 0;
+	}
+
+	.algorithm:not(.heading) > :last-child {
+		margin-bottom: 0;
+	}
+
+	.algorithm .algorithm {
+		margin: 1em 0;
+	}
+
 /** Blockquotes ***************************************************************/
 
 	blockquote {