If you during the installation of the theme you get this error :
Unpacking the package… Installing the theme… The package could not be installed. The theme is missing the style.css stylesheet. Theme install failed.
This means that you have imported the incorrect theme file.
Get the theme file
To get the theme file you have two ways:
1. Download the theme directly from ThemeForest: In your themeforest download area click on the green button”DOWNLOAD” and select “Installable WordPress file only” for get the theme zip.
2. Get the file from the main zip: If in the first step you have dowloaded “All files & documenattion” zip now you have to decompress the zip and inside it you will find the theme zip in the folder “WP theme” ( in the example the theme Love Travel ).