Edit the css.php of this plugin.

Oranyero, this is a problem, the truth is not css and php. you could help me?

It displays nice for me with my custom theme's css

amending, in css?

mod/events_calendar/datepicker.css

apology, which lines I have to edit?

 Thanks

That is a tough call, you have to edit the lines that make the change you want. You, like the rest of us are going to have to experiment and learn. Take notes on your changes as it helps if you have to go back at a later time and re-edit your work.

Do you know how to get 'only' the names of the events without the description?

here is how I have it set

Event listing format
paged
by month

Add starting and ending times as well as dates to events
yes
no

Automatically add events a user creates to his/her personal calendar.
yes
no

Automatically add group events for all members to their personal calendars.
yes
no

Use Agenda view
yes
no

Display venue in summary view (event listings)
yes
no

Site calendar
no
yes, only admins can post events
yes, any logged-in user can post an event

Group calendars
no
yes, only admins and group owners can post events
yes, any group member can post an event

New groups should by default have a group calendar (if group calendars are enabled)
yes (but admins or group owners can turn a group calendar off if desired)
no (but admins or group owners can turn a group calendar on if desired)

If group calendar is enabled, always display it (even if empty)
yes
no

Group calendar profile display (if group calendars are enabled)
left column
right column
none

Add region field to events
yes
no

I put that configuration. gender and conflict with my database