html, body {
    background-color: #232121;
    color: antiquewhite;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    line-height: 1.5;
    margin: 0;
    padding: 0;
 }
#main-doc {
    position: absolute;
    margin-left: 300px;
    width: 60vw;
    padding:95px 50px 15px 50px;
    background: #303130;
    border-radius: 50px 50px 50px 50px;
    font-size: 16px;
}
#navbar {
    position: fixed;
    top: 120px;
    bottom: 10px;
    width: 50%;
    height: 100%;
    margin-left: 30px;
    background: rgb(166 241 191 / 20%) ;
    border-radius: 50px 50px 50px 50px;
    font-size: 16px;
    overflow-y: auto;
}

 .headline{
    font-size: 40px;
    text-align: center;
    margin: 30px;
}
#navbar header{
    margin: 10px 0 10px 40px;
}
header{
    color: #a6f1bf;
    font-size: x-large;
}
#navbar ul{
    line-height: 2.25;
}
#navbar li{
    list-style: none;
    position: relative;
}
#navbar a{
    text-decoration:none;
    color: #bff4d1;
    margin-left: 2px;
}
code {
    display: block;
    text-align: left;
    white-space: pre-line;
    position: relative;
    word-break: normal;
    word-wrap: normal;
    line-height: 2;
    background-color:#2b4333;
    padding: 15px;
    margin: 5px;
    border-radius: 5px;
  }
#Reference{
    border-top: 1px solid #2b4333;
    margin-top: 50px;
}
.reference{
    margin: 25px;
    margin-top: 5px;
}
section li{
    margin:20px 0 0 20px ;
}
section article{
    margin: 25px;
}

/*responsive styles*/
/*for tablets*/
@media (max-width: 1024px) {

    #navbar {
        position: fixed;
        top: 170px;
        left: 0;
        width: 250px;
        height: 95%;
        padding: 20px;
        border-radius: 50px;  
        font-size: 8px;
        margin-left: 10px;
    }
    #main-doc{
        position: relative;
        margin: 5px 20px;
        width: 350px;
        font-size: 18px;
        margin-top: 60px;
        margin-left: 260px;
        padding:95px 50px 15px 50px;
    }
    .headline {
        font-size: 40px;
        margin: 50px;
        text-align: center; 
        
    }
    section li {
        margin: 15px 0 0 15px;
    }
    section article {
        margin: 20px;
    }
    code {
        padding: 10px;
        margin: 3px;
        line-height: 1.8;
    }

    #Reference {
        margin-top: 40px;
    }

    .reference {
        margin: 20px;
        margin-top: 4px;
    }
}
/*for mobiles*/
@media (max-width: 768px) {

    #navbar {
        position: fixed;
        top: 190px;
        left: 0;
        width: 90px;
        height: 95%;
        padding: px;
        border-radius: 50px;  
        font-size: 8px;
        margin-left: 10px;
        border-radius: 10px;
    }
    #navbar a {
        margin-left: 0;
        text-align:left ;
    }
    #main-doc{
        position: relative;
        margin: 5px 20px;
        width: 240px;
        font-size: 8px;
        margin-left: 150px;
        padding:30px 10px;
        border-radius: 10px;
    }
    .headline {
        font-size: 30px;
        margin: 50px;
        text-align: center;      
    }
    section li {
        margin: 10px 0 0 10px;
    }
    section article {
        margin: 15px;
    }
    code {
        padding: 10px;
        margin: 3px;
        line-height: 1.8;
    }
    header {
    font-size:small ;
    }
    #Reference {
        margin-top: 30px;
    }
    .reference {
        margin: 15px;        
    }
}