index.css

html,
body {
  width: 100vw;
  height: 100vh;
  margin: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

.primary {
  color: #ff8080;
}

.navbar {
  box-shadow: #ccc 0px 1px 4px 0px;
  padding: 1rem;
  display: flex;

  align-content: center;
  margin: auto 0;
}

.navbar h1 {
  line-height: 3.4rem;
  margin-left: 0.5rem;
}
.navbar .left {
  flex: 1 0 auto;
  display: flex;

  align-content: center;
  margin: auto 0;
}

.navbar .right {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.navbar a {
  text-decoration: none;
}

.logo {
  width: 60px;
  height: 60px;
}

h1 {
  margin: 0;
}

.huge {
  margin: 1rem;
  font-size: 6rem;
}

.center {
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.center p {
  color: #616161;
}
.features img {
  width: 90%;
  height: auto;
  margin: 0 auto;
  box-sizing: border-box;
}