The alignment of the event marker relative to the line is slightly off, layout styles affected: * `alt-evts` * `alt-evts-inline-date` * `inline-evts` <img width="1200" alt="offset" src="https://user-images.githubusercontent.com/2085226/67710483-51a02e80-f9c0-11e9-82c2-e3beddaaf4b3.png"> When switching through the different [layout styles](https://react-timeline.com/?path=/story/timeline-layouts-intro--page) available, the issue does **not** seem to occur when using the `inline-evts-inline-date`-layout : <img width="1050" alt="normal" src="https://user-images.githubusercontent.com/2085226/67710523-6977b280-f9c0-11e9-8ded-2442460b84c1.png">