How to find something similar to this?

Question

css

Tell me, please, dear frontenders, has anyone tried css frameworks similar to this, or can anyone tell me what this style is called?


UPD
yes, it seems my screenshots are not quite clear. I meant the whole design, with shapes, smooth lines. Does this all have a name? Maybe there is some kind of framework where the elements look similar (for example, some kind: Oncen UI; MD Bootstrap or libraries with elements for Vue or something else, the form of implementation is not as important as the name of the style / design).
Here are a couple more pictures:

Answer 1

CSS. This is the base

Answer 2

Well, for example, but this is a library :) and if I understand correctly what you mean https://github.com/zalog/placeholder-loading