* {
    margin: 0;
}
body {
    font-family: cursive;
}  
#navbar {
    position: fixed;
    top: -1px;
    left: 0;
    height: 100%;
    border-style: solid;
    border-width: 2px;
    font-size: 20px;
}
.nav-list {
    flex-wrap: wrap;
    padding-left: 0;
}  
.nav-list li {
    text-align: center;
    list-style: none;
    margin-top: 20px;
}
.nav-list li a:hover {
    background-color: #d3d3d3;
}
section h2 {
    font-size: 1.1rem;
    margin-top: 2rem;
} 
a {
    text-decoration: none;
    color: black;
}  
#main-doc {
    position: fixed block;
    margin-left: 35%;
    margin-top: 25px;
}
.main-section ul{
    margin-left: 0px;
}
.topic {
    margin-left: 25px;
    margin-right:  10%;
    padding-top: 15px;
    font-weight: bold;
    text-align: center;
    font-size: 23px;
}

.main-section code {
    background-color: #D3D3D3;
  
    border-radius: 0.5rem;
    text-align: center;
}


  
@media only screen and (max-width: 480px) {
    body {
        font-size: 0.8rem;
    }
    header {
        margin-left: 0;
    }
    .topic {
        font-size: 1rem;
        margin-left: 2px;
        margin-right: 2px;
    }
    #navbar {
        font-size: 0.8rem;
        font-weight: bold;
        width: 30%;
    }
    .main-section p {
        margin-bottom: 10px;
    }
}
  
@media only screen and (min-width: 481px) {
    body {
        font-size: 1rem;
    }
    .topic {
        font-size: 1.2rem;
        margin-left: 2px;
        margin-right: 2px;
    }
    #navbar {
        width: 30%;
    }
    nav li {
        font-size: 1rem;
    }
}

@media(min-width: 1025px) {
    body {
        font-size: 1.3rem;
    }
    .topic {
        font-size: 1.7rem;
        margin-left: 2px;
        margin-right: 2px;
    }
    #navbar {
        width: 20%;
    }
    #main-doc {
        margin-left: 25%;
    }
    section h2 {
        font-size: 1.5rem;
    }
  }