How to get images shown in grid view

1

I want to achieve the same view as this image:

image
image1937×1292 504 KB

I have tried these 5 available configurations:

├── combined
│   ├── expanded
│   ├── grid
│   └── list
└── uncombined
    ├── normal
    └── widescreen

none of them gives me the same view as the image above.
my tt-rss now looked like this:

How should I adjust my preference?
Do I need some custom css or plugins?

2

this only works if there are images in the feed or you use plugins to get full text content.

for reddit specifically, you need to enable af_redditimgur plugin.