Create a first CSS

I have red the manual on how to create a css, however when I add “/backlight/custom/css” to my site, I only see my Dashboard. How do I start making my first CSS?
Please advise>

Are you referring to creating a css file or accessing one?
A CSS file is simply a plain text file with the extension of .css.
You do not need to create the folder that you upload the file to (the css folder inside of /backlight/custom/

Got it, and it is working now, but not yet at the thumbnails of the album set.
Do I have to write to add an: #
Thanks for your support

you will need to use the correct selector for the element you want to style.
You can find it by using the browsers inspector.
What are you trying to do?
Can you post a link?

I have already - partly - successful versed a CSS file. It works well for having a border around the thumbnails in all my albums. However, it does not work for the thumbnails in the album set.

Album e.g. (border O.K.): Overzicht - Silvester Povel | Photography
Galleries menu item (no borders yet): Galleries - Silvester Povel | Photography

CSS reads as follows:

#albums figure .thumbnail {
border: 1px solid black;
.gallery img {
border: 1px solid black;

versed should read: created

Try this for the thumbnails in the descriptive album set:

.albums-descriptive img {
	border: 1px solid black;

Works very well!
I understand now how it works.

Thanks a lot.