How to style "from-to" date in events list view

I am looking for a solution to customise the "from-to" date style in the event list view on the preview image. Currently, the "from date" is displayed very differently from the "to date". They should both look like the "from date". The example below can be reached at https://www.haebse.ch/spielplan

While at it, how do I add a full stop after, i.e "24" in the example? So the day count of the date always ends with a ".". ie.: 24. MAI