body * {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0px;
}

/*
Part 2: Put the main element (the card's parent container)
into flex mode (display: flex) and adjust the 
justify-content and align-items properties to center the card.
*/
main {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/*
Part 1: Create some style blocks to style the card. 
    Experiment with: border, padding, margin, height, and width.
*/
.card {
  border: 1px solid lightgray;
  width: 25vw;
}

h2,
p,
button {
  margin: 20px;
}

img {
  width: 100%;
}