body{
    font-family: "Open sans", "sans-serif";
    margin: 0;
    overflow-x: hidden;
}

html{
    scroll-behavior: smooth;
}

header{
    z-index: 1;
    text-align: center;
    padding: 1rem;
    position: fixed;
    width: 100%;
    height: auto;
    background-color: aliceblue;
    box-shadow: 0px 2px 4px 1px rgba(0, 0, 0, 0.1);
}

main{
    margin: 0 auto 0 auto;
    padding-top: 7rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

h1{
    font-size: 1.5rem;
}

h2{
    text-align: center;
}

.haut_page{
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content:center;
    gap: 20rem;
    height: 39rem;
    width: 100rem;
    background: no-repeat url("/images/fond_vecteur.svg")  rgba(0, 0, 0, 0.841);
    background-position: left;
}

.presentation{
    padding-bottom: 2rem;
    border-bottom: 2px solid black;
}

.presentation::after{
    position:absolute;
    width: 100%;
    z-index: -3;
    content: url("/images/ligne_1.webp");
    left : 0;
    top : 50rem;
}

.projet{
    width: 1000px;
}

.influences{
    border-bottom: #000000 solid 2px;
}

.influences p{
    text-align: center;
}

.logiciel ul li article{
    padding: 0 1rem;
}

.haut_page h2{
    color:#FFFFFF;
    font-size: 4rem;
    margin-top: 150px;
}

.presentation h2,
.projet h2{
    color:#000000;
    font-size: 4rem;
}

.h3-hori{
    margin: 1rem;
}

nav li{
    display: flex;
    column-gap: 2rem;
    padding: 0.7rem 1rem;
    margin: 0.5rem 3rem;
    text-decoration: none;
    background-color: white;
    border-radius: 10px;
}

nav ul{
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content:center;
}

section:not(.portrait_chinois){
    padding-left: 200px;
    padding-right: 200px;
}

a{
    
    scroll-behavior: smooth;
}

section{
    scroll-margin: 150px;
}

li{
    list-style: none;
}

a{
    outline: none;
    text-decoration: none;
    color: #000000;
    font-weight: 600;
}

article{
    background-color: rgba(255, 255, 255, 0.678);
    border: #000000 solid 1px;
    margin-bottom: 2rem;
}


div{
    padding: 2rem 2rem;
}

.projet-item,
.reverse{
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content:center;
}

.reverse{
    flex-direction: row-reverse;
}

img{
    max-width: 100%;
    height: 30rem;
}

.logo{
    width: 10rem;
    height: auto;
}


.horizontal{
    width: 100%;
    height: auto;
}

video{
    max-width: 100%;
}

.portrait_chinois{
    color: black;
    padding: 1rem 0rem;
    text-align: center;
    background-image: repeating-linear-gradient(-100deg,#FFFFFF 5% 10%, #000000 10% 15%);
}

.portrait_chinois p{
    background-color: rgba(255, 255, 255, 0.663);
    margin: 1rem 100px;
    padding: 10px 200px 10px 200px;
    border-radius: 10px;
}


.portrait_chinois h2{
    background-color: rgba(255, 255, 255, 0.663);
    margin: 1rem 400px;
    padding: 10px 50px;
    border-radius: 10px;
}

.portrait_chinois::after{
    position:absolute;
    width: 100%;
    z-index: -3;
    content: url("/images/ligne_2.webp");
    top: 320rem;
    left: 0;
}

footer{
    background-color: rgb(249, 174, 192);
    text-align: center;
    padding: 2rem;
    width: 100%;
}

fieldset{
    border: none;
    display: flex;
    column-gap: 10%;
    justify-content: center;
    margin: 1rem;
}


fieldset div, legend{
    display: flex;
    justify-content: center;
    flex-direction: column;
    background-color: white;
    border-radius: 10px;
    margin: 0;
    width: 20%;
    padding: 2rem;
}