General Design
The design centers around the focus of content and image in the cleanest and minimal way. The use of lines and colors is at the lowest point but still, gives the extreme charm, harmony, and elegance.
Other elements
Talking about color, there are no other colors apart from black, white and a little brown. These simple neutral colors when combined represent a classic sense and coolness so it will be a heaven with those who love this style. You can make use of this color palette to adjust your image color to enhance the coolness of your website like the demo.
Josefin Slab typeface is probably the most interesting elements of this theme. This unique font is excellent for heading display. It makes your title so special, daring and outstanding. Then, Lora and Libre Baskerville will help the content so readable and also aesthetic.
The header area is made to be so spacious and simple. But you can still see the title so prominent and thanks to the beautiful typography and these tiny decorative things. They're used adequately and wisely, giving this area a balanced look yet still, beautiful and special.

The small decorative elements on the header
The sticky menu and container-designed slider are just simple and clean. So, the title box on the slider makes it fancy. I love the way these two boxes are stacked like this. This distinctive design gives Yosemite Lite a novel breath.

The boxes on slider
On the archive page, your posts are listed with a small thumbnail, which is also the only style for the page. Notably, this free minimalistic blog template supports slide show for this position. That's so cool! But it just happens if you use the classic editor to add a gallery inside a post and this gallery will become that slider.

Blog list with a slider as a featured image
The footer is just clean and straightforward. But what makes me love this area so much is the slim short lines here. They're the effective decorative elements making the design more balanced and shapely.

Slim lines are used to decorate the footer
Responsive
This theme is friendly with handheld devices and displays nicely on all screen. However, when I use it on my mobile (iPhone X), there is no "read more" button in the slider like this.

The box on slider disappears on a mobile device
You can check the responsive design by some online tools.

The responsive design