html {
    height: 100%;
}

body {
    color: black;
    font-family: 'Fira Sans', sans-serif;
    background-color: beige;
    height: 100%;
    margin: 0;
    padding: 0;
}

p, li {
    font-size: large;
}

header {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 20%;
}

h1 {
    background-color: rgb(235, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50%;
    height: 90%;
    border-radius: 1000px;
}

main {
    display: flex;
    height: 90%;
    flex-wrap: wrap;
    flex-direction: row;
}

aside {
    flex-basis: 15%;
    flex-grow: 2;
    margin-right: 2%;
    margin-left: 1%;
    background-color:darkturquoise;
    border-top-right-radius: 1000px;
    border-top-left-radius: 1000px;
    text-align: center;
}

ul {
    margin-left: 5%;
    margin-top: 0px;
}

nav ul{
    margin: 5%;
    padding: 30px 0 0 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    
}

nav {
    opacity: 100%;
}

nav a {
    text-decoration: none;
    color: black;
    height: 50px;
    width: 80%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 100px;
    margin-top: 10px;
}

nav a:hover {
    background-color: cornflowerblue;
}

article {
    display: flex;
    margin-top: 100px;
    margin-right: 1%;
    flex-basis: 80%;
    flex-shrink: 1;
    height: fit-content;
    border-radius: 1000px;
    background-color:cyan;
    flex-direction: column;
    justify-content: center;
}

article h2 {
    margin: 3%;
}

article h3 {
    margin-bottom: 3%;
}

article p {
    margin: 2%;
    margin-left: 5%;
    margin-right: 5%;
}

div.purpround {
    z-index: -3;
    position: absolute;
    right: 15%;
    bottom: 3%;
    width: 300px;
    height: 300px;
    background-color:darkorchid;
    border-radius: 200px;
}

div.yelcircle {
    z-index: -1;
    position: absolute;
    left: -20%;
    top: -10%;
    border: solid 150px;
    border-radius: 400px;
    border-color: yellow;
    width: 400px;
    height: 400px;
}

div.orcicle {
    z-index: -1;
    position: absolute;
    width: 300px;
    height: 300px;
    border: solid 200px;
    border-color: orangered;
    border-radius: 400px;
    left: 10%;
    top: 30%;
}

div.greenround {
    z-index: -2;
    position: absolute;
    width: 650px;
    height: 650px;
    background-color: rgb(0, 160, 0);
    border-radius: 1000px;
    right: 3%;
    top: 5%;
}

div.pinkcircle {
    z-index: -2;
    position: absolute;
    right: 25%;
    top: 10%;
    border: solid 150px;
    border-radius: 400px;
    border-color:dodgerblue;
    width: 300px;
    height: 300px;
}

main.proj {
    height: 150%;
}

div.projet {
    position: absolute;
    display: flex;
    margin: 0;
    height: 300px;
    width: 400px;
    justify-content: center;
    align-items: center;
    margin-top: 100px;
    margin-right: 1%;
    flex-basis: 80%;
    flex-shrink: 1;
    border-radius: 1000px;
    flex-direction: column;
}

div.projet p.court {
    margin: 0px;
    margin-left: 5%;
    margin-right: 5%;
}

div.projet section.long {
    opacity: 0%;
    position: absolute;
    left: -2000px;
}

div.projet:hover {
    width: 80%;
    height: 60%;
    left: 10%;
    transition: all 1s;
    z-index: 3;
}

div.projet:hover section.long{
    opacity: 100%;
    left: 0;
    transition: opacity 1s;
    margin-left: 5%;
    margin-right: 5%;
    position: relative;
}

div.un {
    background-color: brown;
    left: 20%;
    top: 30%;
}

div.deux {
    background-color:darkorange ;
    left: 40%;
    top: 10%;
}

div.trois {
    background-color: fuchsia;
    left: 60%;
    top: 30%;
}

div.quatre {
    background-color:mediumpurple;
    left: 40%;
    top: 50%;
}

div.cinq {
    background-color: crimson;
    left: 20%;
    top: 70%;
}

div.six {
    background-color: cadetblue;
    left: 40%;
    top: 90%;
}

div.sept {
    background-color: darkcyan;
    left: 60%;
    top: 70%;
}

article.etudes0 {
    text-align: center;
    margin-left: 10%;
    margin-right: 10%;
}


article.etudes1 {
    text-align: center;
    margin-left: 10%;
    margin-right: 10%;
    background-color:rgb(0, 197, 197);
}

article.etudes2 {
    text-align: center;
    margin-left: 10%;
    margin-right: 10%;

    background-color: darkcyan;
}

article.etudes3 {
    text-align: center;
    margin-left: 10%;
    margin-right: 10%;
    background-color: #006060;
}

h2.index {
    margin-bottom: 0px;
}

section {
    width: 80%;
}