* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  height: 100vh;
/*   width: 100vw; */
}
.app {
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Styles for navbar */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 200px;
  height: 100%;
  background-color: #333;
  color: #fff;
  padding: 20px;
}

#navbar header {
  font-size: 1.5rem;
  margin-bottom: 20px;
}

#navbar ul {
  list-style-type: none;
  padding: 0;
}

#navbar ul li {
  margin-bottom: 10px;
}

#navbar ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
}

/* Styles for main content */
#main-doc {
  margin-left: 220px;
  padding: 20px;
}

.main-section {
  margin-bottom: 40px;
}

.main-section header {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.main-section p {
  line-height: 1.6;
}

.main-section code {
  display: block;
  background-color: #f4f4f4;
  padding: 10px;
  margin-bottom: 10px;
}

.main-section ul {
  list-style-type: disc;
  margin-left: 20px;
}

@media screen and (max-width: 768px) {
  #navbar {
    width: 100%;
    height: auto;
    position: relative;
  }

  #main-doc {
    margin-left: 0;
  }
}