* {
  box-sizing: border-box;
  font-family: var(--font-family);
}

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

header {
  width: 100%;
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr) 10rem;
  color: var(--text-primary);
  align-items: center;
  justify-content: space-between;
  align-content: center;
  padding: var(--space-md);
  height: 5rem;
  overflow: visible;

  transition: background-color var(--transition-base),
              box-shadow var(--transition-base);
}

header h1 {
  font-size: var(--font-size-xl);
  margin: 0;
  justify-self: flex-start;
}

header nav ul {
  list-style-type: none;
  padding: 0;
  justify-self: center;
  margin: 0;
}

header nav ul li {
  display: inline;
  margin: 0 var(--space-md);
  font-weight: bold;
}

header nav ul li a {
  color: var(--color-primary);
  text-decoration: none;
}

header nav ul li a:hover {
  color: var(--color-secondary);
}

header #logo {
  width: 160%;
}

.sticky-header {
  position: sticky;
  top: var(--space-lg);
  z-index: 100;
}

@media screen and (max-width: 768px) {
  body {
    display: none;
    font-size: 125%;
  }

  header {
    grid-template-columns: 1fr 1fr;
    height: 5rem;
    padding: var(--space-sm);
    top: 0;
  }

  header.mt-md {
    margin-top: 0 !important;
  }

  header.radius-xl {
    border-radius: 0 !important;
  }

  header.sticky-header {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    z-index: 100;
  }

  header #logo {
    width: 10rem;
  }

  header nav.flex {
    display: none !important;
  }

  header h1 {
    font-size: var(--font-size-lg);
    text-align: center;
  }
}