Kera them it doesn't work after downloaded it

after I uploaded the theme showed me these

Unpacking the package…

Installing the theme…

The package could not be installed. The theme is missing the style.css stylesheet.

Theme installation failed.

could anyone tell me the solution

You can follow this article https://help.market.envato.com/hc/en-us/articles/202821510-Theme-is-missing-the-style-css-stylesheet-error