Why can I never sell an item if I want to send it?

I already sent more than 10 projects for the submission and believe me, all the items were rejected, I don’t know if that happens because I live in Brazil can someone help me with this? What am I doing wrong ?

My most recent item has CSS and HTML files and only 1 image.

If you want feedback then you need to share demo links here

That said CSS and HTML and 1 image is never going to be enough

I made a basic website in html and css, follow the link: http://jovempleno.com.br/project/NTWO/

Taking advantage, would you have any step by step to publish an item successfully on the platform?

With repsect this is no where near the standards.

There’s no feedback to give other than to review popular items already for sale and you will see the expected standards, versatility etc. e.g. https://themeforest.net/item/canvas-the-multipurpose-html5-template/9228123

Even though it is a one-page category item? But really the content you showed me can help me a little in future projects.

This is just WAY too simple. You can create one page template with premium feel. This ain’t it.
Also, it isn’t really responsive. Just try to resize your browser window.