computer-graphics-study/index.css

html, body{
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}
body{
    background:  rgba(0, 0, 0, 0) linear-gradient(rgb(56, 56, 56), rgb(122, 122, 122)) repeat scroll 0% 0%;
}
#canvas{
    top: 0;
    left: 0;
    position: fixed;
}

#drawer-button{
    width: 30px;
    height: 30px;
    top: 5px;
    right: 5px;
    position: fixed;
    background-color: rgb(0, 0, 0,0.5);
    border-radius: 5px;
    color: white;
}

#drawer{
    position: fixed;
    width: 350px;
    height: calc(90vh - 70px);
    top: 70px;
    right: -380px;
    transition: right 0.4s ease;
    background-color: white;
    box-shadow: black 5px 5px 10px 0px;
    border-radius: 5px;
    padding: 15px;
}