* {
    box-sizing: border-box;
}

body {
    min-width: 300px;
    font-family: sans-serif;
    display: flex;
    line-height: 1.5;
    margin: 0;
}

#navbar{
    position: fixed;
    min-width: 300px;
    top: 0px;
    left: 0px;
    width: 300px;
    height: 100%;
    border-right: solid grey;
    background-color: #eee;
}

main{
    height: 100vh;
    overflow-y: scroll;
}

header{
    color: black;
    margin: 10px;
    text-align: center;
    font-size: 2rem;
    font-weight: thin;
}

nav header {
    padding: 15px;
}

#navbar ul{
    height: 80%;
    padding: 0;
    overflow-x: auto;
    overflow-y: scroll;
}

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

#navbar a {
    color: #000;
    display: block;
    padding: 15px 30px;
    text-decoration: none;
    cursor: pointer;
}

#main-doc {
    position: absolute;
    margin-left: 310px;
    padding: 30px;
    margin-bottom: 120px;
}

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

#customList ul{
    list-style-type: none;
    columns: 2;
    -webkit-columns: 2;
    -moz-columns: 2;
}

#codeComment {
    color: green;
}

#warning{
    color: red;
}

code {
    display: block;
    text-align: left;
    white-space: pre-line;
    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) {
    #navbar ul {
        border: 1px solid;
        height: 210px;
    }
}

@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;
  }
}