CSS not including after initial setup

[rph8]

I just started using Gravstrap and it seems like the CSS files are not included.

I did the following:

1. Installed Gravstrap with gpm on Grav 1.2.4 with MAMP.
2. Added the following code to /pages/01.home/default.md

[g-carousel id="carousel1" name="carousel1"]

[g-carousel-item image="image1.jpg"]
Page 1
[/g-carousel-item]

[g-carousel-item image="image2.jpg"]
Page 2
[/g-carousel-item]

[g-carousel-item image="image3.jpg"]
Page 3
[/g-carousel-item]
[/g-carousel]

and I do not get the actual carousel but instead only the pictures load and the text shows.
The pictures are placed in /pages/images/ as described elsewhere.
Also in the source code I can see that none of the Gravstrap css is included.

I am using the Antimatter default theme. Do I have to use the Gravstrap theme instead?