[BUGFIX] System information looks ugly

Install tool -> important actions -> system information does
not break correctly on the definition list. Adapt css a bit.

Resolves: #49748
Related: #49162
Releases: 6.2

Change-Id: Ia2f1c5e4152c238e9c53fb383588fd12d72df1d8
Reviewed-on: https://review.typo3.org/22053
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring

typo3/sysext/install/Resources/Public/Stylesheets/Action/Common/Install.css

@@ -465,12 +465,18 @@ h1,
 	background-color: #ffffff;
 }
 
+#systemInformation {
+	overflow: hidden;
+}
+
 #systemInformation dt {
 	float: left;
 	width: 11em;
+	clear: left;
 }
 
 #systemInformation dd {
+	float: left;
 	padding-left: 11em;
 	font-weight: bold;
 }