Responsive using HTML CSS FLEX

To center .card on the page using flexbox or grid instead of margin:

• USING FLEXBOX: add min-height:100vh; display: flex; align-items: center: justify-content: center; to the body

body{
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}

• USING GRID: add min-height:100vh; display: grid place-items: center to the body

body{
min-height: 100vh;
display: grid;
place-items: center;
}

For a responsive content give .card a fixe max-width value instead of a width. max-width:25rem.

Add the body a background-size of contain.

Hope am helpful.

Well done for completing this challenge. HAPPY CODING