I don't want to use xpath on the elements below.
element :img_login, :xpath, '//[@id="main-wrapper"]/div/section/div/div[2]/div/div/div[1]/img' element :msg_login_senha_invalidos, :xpath, '//[@id="main-wrapper"]/div/section/div/div[2]/div/div/div[2]/div/p'
They are on the page as follows: element img_login
<div class="sc-jRQAMF eRnhep">
<img src="https://quasar-flash-staging.herokuapp.com/assets/login/flashLogo-3a77796fc2a3316fe0945c6faf248b57a2545077fac44301de3ec3d8c30eba3f.png" alt="Quasar Flash">
</div>
element msg_login_senha_invalidos
<p class="MuiFormHelperText-root MuiFormHelperText-contained Mui-error MuiFormHelperText-filled">Login e/ou senha inválidos</p>
You have asked multiple questions about converting from using XPath to some other type of selector when using Site-Prism. StackOverflow is meant to be a place to come, learn, and improve your skills - not just to get someone else to do your work. It really seems you'd be better off reading up on CSS and how it can be used to select elements. Also note that there's nothing specifically wrong with using XPath, per se, it's just the way people new to testing and selecting elements on a page tend to use it (just copying a fully specified selector from their browser) that leads to having selectors that are way too specific and therefore brittle. A good site for you to learn about the different general CSS selector options available is https://flukeout.github.io/ - and you can look at the built-in selector types provided by Capybara at https://github.com/teamcapybara/capybara/blob/master/lib/capybara/selector.rb#L18
In your current case the below may work, but with the HTML you have provided all that's possible to say is that they will match the elements shown however they may also match other elements which will give you ambiguous element errors.