#navbar {
    position: fixed;
    min-width: 290px;
    top: 0px;
    left: 0px;
    width: 300px;
    height: 100%;
    border-right: double;
    border-color: black; 
    scroll-behavior: auto;
}

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

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

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

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

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

section article {
    color: black;
    margin: 15px;
    font-size: 1em;
}

h1 {
    background: lavenderblush;
    padding-top: 1em;
    padding-bottom: 1em;
}

img {
    margin: auto;
    height: fit-content;
    width: fit-content;
}
@media only screen and (max-width: 400px) {
    #main-doc {
        margin-left: -10px;
    }
}