diff --git a/phpBB/styles/prosilver/theme/common.css b/phpBB/styles/prosilver/theme/common.css
index 7eb00bd808..fd41d66793 100644
--- a/phpBB/styles/prosilver/theme/common.css
+++ b/phpBB/styles/prosilver/theme/common.css
@@ -299,6 +299,8 @@ span.corners-bottom span {
 ul.linklist {
 	display: block;
 	margin: 0;
+	height: 4%;
+	overflow: hidden;
 }
 
 ul.linklist li {
@@ -485,6 +487,11 @@ dl.details dd {
 	width: 65%;
 }
 
+.clearfix, #tabs, #minitabs, fieldset dl, ul.topiclist dl, dl.polls {
+	height: 1%;
+	overflow: hidden;
+}
+
 /* Pagination
 ---------------------------------------- */
 .pagination {