index.css

body {
    background-color: #E9E9E9;
    margin: 0px;
    font-family: "Trebuchet MS", Helvetica, sans-serif;
}

.navigation {
    background-color: #797979;
    position: fixed;
    top: 0px;
    width: 100vw;
}

.navigation .main {
    display: flex;
    font-size: 20px;
    position: relative;
    text-align: center;
    margin: auto auto;
    width: 1200px;
    
}
.navigation .main .button{
    padding: 20px 15px;
    margin: auto 15px;
    transition: background-color 0.1s linear;
    cursor: pointer;
    color: white !important;
    text-decoration: none !important;
}

.navigation .main .button:hover {
    background-color: #555555;
}

.navigation .main img{
    
    display: inline-block;
    margin: 5px 20px 5px 0;
    cursor: pointer;
    width: 115px

    
}

#triangle {
    font-size: 20px;
}


.projets {
    display: flex;
    width: 1200px;
    margin: 65px auto 0px auto;
    max-width: calc(100vw - 20px)
}

.projets ul {
    padding: 7px 0 0 0;
    font-size: 18px;
}

.projets li {
    margin: 10px 10px;
    list-style-type: none;
    font-weight: bold;
}

.child {
    margin: 5px 10px;
    
}

.child a {
    transition: all 0.1s ease-in-out;

}

.projets li a {
    text-decoration: none !important;
    padding: 3px 0;
    color: #747474 !important;
    cursor: pointer;
}

.child a:hover {
    border-left: 4px solid #114FE0; 
    padding-left: 5px;
}

.projets .parent {
    margin-top: 25px;
    color: black;
}

aside {
    height: calc(100vh - 125px);
    margin: 30px 0;
    width: 11vw;
    min-width: 135px;
    position: fixed;
    border-right: 2px solid #747474
}

.display {
    margin: 0 0 0 calc(5vw + 135px);
    width: calc(1200px - calc(5vw + 135px));
    max-width: calc(100vw - calc(5vw + 135px));
}

.display h1 {
    text-align: center;
    margin: 25px 0;
    min-width: 200px
}

.projet h2 {
    padding-left: 5px;
}

#game_of_life embed {
    border: 1px solid #114FE0;
}

.projet a {
    color: black !important;
    transition: font-size 0.07s linear
}

.projet a:hover {
    font-size: 17px;
}

.instructions {
    text-align: right;
    margin-bottom: 0px;
    font-size: 10px;
    color: #114FE0;
}

.projet img {
    width: calc(1200px - calc(5vw + 135px))
}