header {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);

  display: flex;
  gap: 20px;
}

body {
  padding-top: 100px;
}

p {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 40px;
}

a {
  font-size: 13px;
  transition: opacity 0.4s ease;
}
a:hover {
  opacity: 0.5;
}

h1 {
  font-size: 32px;
  padding: 20px;
}

.block {
  height: 2400px;
  padding: 20px;
}

.block p {
  font-size: 16px;
}

.block a {
  width: fit-content;
  border-radius: 4px;
  padding: 20px 40px;
  background: #333;
  color: #fff;
}