* { box-sizing: border-box; }

html, body, ul { padding: 0; margin: 0; }

body {
  background: #111;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

#container {
  text-align: center;
  width: 28rem;
}

h1 {
  margin: 4px 0;
  padding: 0;
  font-size: 24px;
}

h3 { margin: 40px 0; font-size: 20px; }

h4 { font-size: 20px; text-transform: uppercase; }

a { text-decoration: none; color: #fff; }

li { list-style: none; margin-bottom: 14px; }

li a {
  display: block;
  background: #e55949;
  padding: 12px 0;
  font-weight: bold;
  border: 2px solid transparent;
  border-radius: 4px;
  text-transform: uppercase;
  width: 75%;
  margin: auto;
  transition: 0.2s cubic-bezier(0.86, 0, 0.07, 1);
}
li a:hover {
  border: 2px solid #fff;
  background: #ff137e;
}