@Hassiai
Posted
Replace <div id="carta"> with the main tag <main>, <h2> with <h1> and <h3> with <p> to fix the accessibility issues. click here for more on web-accessibility and semantic html
There is no need to give the body a width value. To center #carta on the page using flexbox, replace the height in the body with min-height:100vh.
Use relative units like rem or em as unit for the padding, margin, width values and preferably rem for the font-size values, instead of using px which is an absolute unit. For more on CSS units Click here
Hope am helpful.
Well done for completing this challenge. HAPPY CODING