html {
  font-size: 10px;
  font-family: Arial, sans-serif;
  line-height: 2rem;
  color: #584d4d;
}

body {
  margin: auto;
  width: 700px;
}

header {
  border-bottom: 1px solid black;
}

.menu {
  line-height: 3.2rem;
  font-size: 1.6rem;
}

.menu ul {
  display: flex;
  justify-content: center;
  gap: 2.4rem;
  list-style: none;
}

.menu a {
  text-decoration: none;
  color: #666666;
}

.menu a:hover {
  color: #000000;
}

.menu .current-page a {
  font-weight: bold;
  color: #000000;
}

/* ---------- */

h1 {
  color: #a7a7a7;
  text-align: center;
  font-size: 2.9rem;
  font-weight: 700;
  line-height: 3.2rem;
  margin-bottom: 3rem;
}

p {
  font-size: 1.5rem;
}

p a, li a {
  color: #584d4d;
}

p a:hover, li a:hover {
  color: #000000;
}

.business-card {
  width: 70%;
  margin: auto;
  border: 1px solid #000000;
  padding: 1.2rem 2.5rem;
  border-radius: 10px;
}

h2 {
  color: #969696;
  font-size: 1.8rem;
  font-weight: 700;
  margin: 4rem 0 2rem;
}

ul.science-list {
  list-style: square;
  font-size: 1.5rem;
}

ul.science-list li {
    padding-bottom: 1.5rem;
}