main.css

html,body{
    min-width: 290px;
    color: #4d4e53;
    background-color: #ffffff;
    font-family: 'Open Sans',Arial,sans-serif;
    line-height: 1.5;
  }
  
  #navbar{
    position: fixed;
    top: 0px;
    left: 0px;
    border-right: 4px solid #00161666;
    border-color: #00161666;
    height: 100%;
    width: 300px;
    min-width: 290px;
  }
  header{
    color: #000;
    font-size: 30px;
    margin: 10px;
    text-align: center;
    font-size: 1.8em;
    font-weight: thin;
  }
  #main-doc header{
  /*   font-size: 30px; */
    margin: 0px;
    text-align: left;
  }
  #navbar ul{
    overflow-y: auto;
    overflow-x: hidden;
    height: 88%;
  }
  #navbar li {
      color: #4d4e53;
      border: 1px solid;
      border-bottom-width: 0px;
      padding: 8px;
      padding-left: 45px;
      list-style: none;
      position: relative;
      left:-50px;
      width: 100%;
  }
  #navbar a{
    color: #4d4e53;
    cursor: pointer;
    text-decoration: none;
  }
  
  #main-doc{
    position: absolute;
    margin-left: 310px;
    padding: 20px;
    margin-bottom: 110px;
  }
  
  section li{
    margin: 15px 0px 0px 20px;
  }
  
  section article {
    color: #4d4e53;
    margin: 15px;
    font-size: 15px;
  }
  
  code {
    display: block;
    text-align: left;
    white-space: pre;
    position: relative;
    word-break: normal;
    word-wrap: normal;
    line-height: 2;
    background-color: #f7f7f7;
    padding: 15px;
    margin: 10px;
    border-radius: 5px;
  }
  
  @media only screen and (max-width: 815px) {
      /* For mobile phones: */
    #navbar ul{
    border:1px solid;
      height:207px;
    }
      #navbar{
        background-color:white;
        position:absolute;
        top:0;
        padding:0;
        margin: 0;
        width:100%;
        max-height:275px;
        border:none;
        z-index:1;
        border-bottom:2px solid;
      }
    #main-doc{
      position: relative;
      margin-left:0px;
      margin-top:270px;
    }
    #main-doc section {
  /*     padding-top: 240px; */
    }
  }
  @media only screen and (max-width: 400px) {
    #main-doc{
      margin-left:-10px;
    }
    code{
      margin-left:-20px;
      width:100%;
      padding:15px;
      padding-left:10px;
      padding-right:45px;
      min-width:233px;
    }
  }