Administration: Add a top margin to Mail Server Port field on small screens.

This change fixes an overlapping issue on small screens in the Writing Settings screen.

Props pravinparmar2404, afercia, utz119, thimalw, sabernhardt, audrasjb.
Fixes #50177.


git-svn-id: https://develop.svn.wordpress.org/trunk@52649 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/forms.css

@@ -1528,6 +1528,10 @@ table.form-table td .updated p {
 		margin: 0 3px;
 	}
 
+	.form-table input[type='text']#mailserver_port.small-text {
+		margin-top: 3px;
+	}
+
 	#pass-strength-result {
 		width: 100%;
 		box-sizing: border-box;