@Hassiai
Posted
Replace<div class="container">with the main tag, <h3> with <h1>, <h4> with <p> and <div class="attribution"> with the footer tag to fix the accessibility issues. click here for more on web-accessibility and semantic html
Every html must have <h1> to make it accessible. Always begin the heading of the html with <h1> tag wrap the sub-heading of <h1> in <h2> tag, wrap the sub-heading of <h2> in <h3> this continues until <h6>, never skip a level of a heading.
To make the image visible, remove "images/" in the src value of the img <img src="image-equilibrium.jpg">
instead of <img src="images/image-equilibrium.jpg" > because the images folder is not in the repository.
To center .card on the page using flexbox, replace the height in .container 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
For a responsive content replace the width in .card with max-width.
Hope am helpful.
Well done for completing this challenge. HAPPY CODING