body {
  background: #ecf0f1;
  color: #050620;
  transition: all 0.3s ease-out;
  display: flex;
  justify-content: center;
}

p, li, a {
  font-size: 18px;
  text-decoration: none;
}

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 60%;
}

.equation {
  display: inline-block;
  width: 60%;
  padding: 40px;
  background-color: rgba(0,0,0,0.5);
  border-radius: 10px;
  color: white;
}