add calculation to line up lines (#516)

Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>

static/css/sections/experiences.css

@@ -81,7 +81,7 @@
 }
 
 .top-right {
-  left: 50%;
+  left: calc(50% - 3px);
   top: -50%;
 }