"Activity Details" Link on Video pages hard to see

[jeanadev]

Describe the bug
On the video screens for activities, there is an "Activity Details" link above the video to the right. It is difficult to see. It is also not clear that it overtakes the window and you leave the video.

To Reproduce
Steps to reproduce the behavior:

1. Login
2. Go to an activity and click "Join in" (if it's live)
3. Notice the "Activity Details" link above the video

Expected behavior
The link should have ample color contrast. And open in a new window

Screenshots

Desktop (please complete the following information):

• OS: mac 11.6
• Browser Chrome
• Version 93

Additional context
If we're ok with this opening in a new window I would include an icon on the button to indicate it would open in a new window.

An even better idea would for there to be an accordion so that the event details could slide down above the video and be seen on the same page in context without having to leave the window.