style.css

body{
    overflow-x: hidden;
}
main {
    display: flex;
    flex-wrap: nowrap;
}
section{
    display: flex;
    flex-wrap: wrap;
    width: 900px;
}
article {
    margin-bottom: 10px;
}
aside{
    display: block;
    position: fixed;
    right: 0;
    height: 100%;
    background: #2d384c;
    padding-right: 80px;
}
.menu h3{
    color: white;
    padding: 5px 0 0 43px;
}
.chapter {
    list-style: none;
}
.menu li {
    padding: 10px;
    color: white;
    font-size: 17px;
    border-bottom: 1px solid #5f5f5f;
    cursor: pointer;
}
h3{
    margin: 18px 0 0 0;
}

button {
    color: white;
    background: black;
    height: 50px;
    width: 100px;
    font-size: large;
}
#code-area{
    width: 36vw;
    height: 90vh;
    position: fixed;
    overflow-x: hidden;
    overflow-y: scroll;
    box-shadow: 10px 8px 31px #d8d8d8;
    padding-left: 40px;
    margin-left: 0px;
    padding-bottom: 100px;
}
#chart-area{
    margin-left: 10%;
    margin-top: 10%;
}
fn, l ,v {
    font-weight: 700;
}
fn{
    color: #0069c3;
}
l {
    color: #e84646;
}
v{

}
c{
    background: #d9fffd;
    font-size: 13px;
}
d{
    white-space: pre-line;
    width: 30vw;
    display: block;
    padding: 5px 0 10px 10px;
    line-height: 2em;
}
pm {
    color: #e8777c;
    font-weight: 600;
    letter-spacing: 2px;
}
ip {
    font-size: 13px;
}
code {
    font-family: -webkit-body;
    letter-spacing: 0.7px;
    background: whitesmoke;
    width: 30vw;
    display: block;
    padding: 15px;
    margin: 2px 0 10px 0;
    line-height: 2em;
}