* {
  box-sizing: border-box;
}
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}
.main-nav {
  background-color: #111;
  overflow-x: auto;
  white-space: nowrap;
  user-select: none;
}
.main-nav ul {
  list-style: none;
  display: inline-flex;
  gap: 15px;
  padding: 0;
}
.nav-divide {
  margin-top: 0;
  margin-bottom: 0;
}
.main-nav ul li a {
  color: #ccc;
  text-decoration: none;
  font-family: monospace;
  font-size: 16px;
  transition: all 0.2s ease;
  text-decoration: underline;
}

.main-nav ul li a:hover {
  color: #00ff88;
  text-decoration: underline;
  background-color: #111;
  cursor: pointer;
}
.main-nav ul li a:active {
  color: #00ff88;
  text-decoration: underline;
  background-color: #111;
  cursor: pointer;
}
@media (max-width: 600px) {
  .main-nav ul {
  list-style: none;
  display: inline-flex;
  gap: 10px;
  padding: 0;
  font-size: 16px;
  margin: 0;
  padding-top: 10px;
  padding-bottom: 10px;
  }
  .main-nav ul li a {
   font-size: 16px;
    text-decoration: underline;
  }
  .main-nav ul li a:hover {
    color: #00ff88;
    text-decoration: underline;
    background-color: #111;
    cursor: pointer;
  }
  .main-nav ul li a:active {
    color: #00ff88;
    text-decoration: underline;
    background-color: #111;
    cursor: pointer;
  }
}