index.css

@import url('https://fonts.googleapis.com/css?family=Lato');

html, body {
  font-family: 'Lato', sans-serif;
}

.container {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  margin: 0;
}

.main {
  width: 700px;
  margin: auto;
  flex: 1;
}

.main__title {
  margin-top: 30px;
  text-align: center;
}

.main__back-btn {
  height: 40px;
  width: 40px;
  margin-right: 5px;
  display: inline-block;

  line-height: 34px;
  text-decoration: none;
  color: #fff;
  background: #000;
  border-radius: 50%;
}

.main__description {
  line-height: 22px;
  text-align: center;
}


.footer {
  height: 50px;
  width: 100%;

  background: #222;
  color: #fff;
}

.footer__inner {
  height: 50px;
  width: 700px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}