diff --git a/ui (gen4)/experiments/centering-and-alignment.html b/ui (gen4)/experiments/centering-and-alignment.html
index 22a1d284..3755ed70 100755
--- a/ui (gen4)/experiments/centering-and-alignment.html
+++ b/ui (gen4)/experiments/centering-and-alignment.html
@@ -14,6 +14,7 @@
background: gray;
}
+/* center marker */
.viewer:after {
position: absolute;
content: "";
@@ -21,14 +22,15 @@
font-size: 0pt;
box-sizing: border-box;
- width: 16px;
- height: 16px;
+ width: 8px;
+ height: 8px;
top: 50%;
left: 50%;
- margin-top: -8px;
- margin-left: -8px;
+ margin-top: -4px;
+ margin-left: -4px;
- border: solid 3px blue;
+ border: solid 2px rgba(0, 0, 255, 0.3);
+ border-radius: 50%;
}
@@ -131,8 +133,6 @@
-
-