[ticket/218] Make sure clock doesn't cause trembling blocks in left column

B3P-218

styles/prosilver/theme/portal.css

@@ -143,6 +143,8 @@ span.portal-corners-top-inner, span.portal-corners-bottom-inner{
 	text-align: center;
 	min-height: 5em;
 	margin: 0 10%;
+	/* set a fixed height to get rid of the trembling clock in IE9 */
+	height: 50px;
 }
 
 .portal-clock {
@@ -304,3 +306,9 @@ span.portal-corners-top-inner, span.portal-corners-bottom-inner{
 	display: inline-block;
 	margin: 21px 0 0 0;
 }
+
+@media all\0 {
+	.portal-clock-back-hours-down, .portal-clock-front-hours-down {
+		margin-left: -1px;
+	}
+}