style.css

*,
*:before,
*:after{ /*pseudo element to insert content from CSS without HTML */
  box-sizing: border-box;
}
/*layout*/
body {
  font family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  margin-right: auto;
  margin-left: auto;
  width: 80%; /*of the screen?*/
  background-color: #fac552;
}

img{
  height: auto;
  max-width: 100%;
}
/*button styles*/
button{
  color: fff;
  text-transform: uppercase;
  background: #60a3bc;
  padding: 10px;
  border-radius: 50px; /*round button instead of square*/
  display: inline-block;
  border: none;
}
blockquote{
  border-left: 0.25em solid #e5e5e5;
  font-style: italic;
  margin: 0 0 1.5625em;
  padding-left: 1em;
  padding-right: 1em;
  quotes: none;
}

blockquote:before,
blockquote:after{
  content: '';
}