html,
body {
  min-width: 290px;
  color: #4d4e53;
  background-color: #ffffff;
  font-family: arial;
  line-height: 1.5;
}

#navbar {
  position: fixed;
  min-width: 290px;
  top: 0;
  left: 0;
  width: 300px;
  height: 100%;
  border-right: solid;
  border-color: rgba(0, 22, 22, 0.4);
}

#navbar ul {
  height: 88%;
  padding: 0;
  overflow-y: auto;
  overflow-x: hidden;
}

#navbar li {
  color: #4d4e53;
  border-top: 1px solid;
  list-style: none;
  position: relative;
  width: 100%;
}

#navbar a {
  display: block;
  padding: 10px 30px;
  color: #4d4e53;
  text-decoration: none;
  cursor: pointer;
}

header {
  color: black;
  margin: 10px; 
  text-align: center;
  font-size: 1.5em;
  font-weight: thin;
}

#main-doc header {
  text-align: left;
  margin: 0;
}

#main-doc {
  position: absolute;
  margin-left: 310px;
  padding: 20px;
  margin-bottom: 110px;
}

section article {
  color: #4d4e53;
  margin: 15px;
  font-size: 0.96em;
}

section li {
  margin: 15px 0px 0px 20px;
}

/* Media query untuk layar kecil */
@media (max-width: 768px) {
  #navbar {
    position: relative;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: solid 1px rgba(0, 22, 22, 0.4);
  }

  #navbar ul {
    height: auto;
  }

  #main-doc {
    margin-left: 0;
    margin-top: 20px;
  }
}