styles.css

body {
  background: grey;
}
body, #btn-tweet, #btn-quote {
  font-family: 'Indie Flower', cursive;
}
#container {
  width: 562px;
  height: 316px;
  margin: 20px auto;
  padding: 50px;
  background: url('https://i.ytimg.com/vi/w7ma8mweDGw/maxresdefault.jpg');
  background-size: cover;
  -o-background-size: cover;
  -moz-background-size: cover;
  -webkit-background-size: cover;
  position: relative;
}
#quote {
  position: absolute;
  left: 145px;
  top: 40px;
  font-size: 40px;
  line-height: 32px;
  padding-right: 10px;
}
#author {
  position: absolute;
  bottom: 58px;
  right: 50px;
  font-size: 40px;
  font-style: italic;
}
#btn-tweet {
  position: absolute;
  bottom: 53px;
  left: 150px;
  font-size: 15px;
}
#btn-quote {
  position: absolute;
  bottom: 53px;
  right: 40px;
  font-size: 15px;
}