body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    width: 100vw;
    overflow-x: hidden;
    font-family: "Inter", sans-serif;
}
/* En-tête */
header {
    background: white; 
    padding: 10px 20px;
    text-align: center;
    height: 5vh;
    display: flex;
    align-items: center; 
}
header h1{
    width: 25vw;
    margin-left: 5vw;
    color: black;
}
nav ul {
    margin-left: 40vw;
    width: 25vw;
    display: flex;
    justify-content: space-between; 
    list-style: none; 
    padding: 0;
}
nav ul li {
    display: inline; 
    margin-right: 10px;
}
nav ul li a {
    text-decoration: none; 
    color: black;
}
.hamburger-menu {
    display: none; 
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
}
/* sections principales */
main {
    padding: 0px;
    margin-top: 0px;
}
/* Premiere partie */
#partie1{
    background-color: #3A6E8C;
    padding-left: 20vw;
    padding-right: 20vw;
    padding-top: 5vh;
}
#partie1 h6{
    color: #ffffff;
    font-size: 1em;
}
#partie1 p{
    color: #ffffff;
    font-size: 1.5em;
    font-weight: bold;
    text-align: justify;
}
#partie1Content{
    display: flex;
    justify-content: space-around; 
    align-items: center;
    height: 49vh;
    padding-bottom: 5vh;
}
#partie1Content img{
    height: 100%;
}
/* Deuxieme partie */
#partie2{
    padding-left: 20vw;
    padding-right: 20vw;
    padding-top: 5vh;
}
.grid-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 10px;
}
.grid-item{
    margin-bottom: 10vh;
}
.grid-item h2{
    color: #3A6E8C;
}
.grid-item img{
    width: 100%;
}
#size{
    margin-top: -15vh;
}
/* Pied de page */
footer {
    background: #3A6E8C;
    color: #ffffff;
    text-align: center;
    height: 20vh;
    width: 100%;
    display: flex;
    justify-content: space-around; 
    align-items: center;
}
footer div{
    width: 20vw;
    height: 18vh;
}
.btn3 {
    display: inline-block; 
    padding: 10px 20px;
    margin: 2px; 
    background-color: white; 
    color: #3A6E8C; 
    text-align: center; 
    text-decoration: none; 
    font-weight: bold; 
    border-radius: 5px; 
    transition: background-color 0.3s, transform 0.2s; 
}
@media (max-width: 1068px) {
    header h1{
        font-size: 1em;
        width: 75%;
        text-align: left;
    }
    nav ul {
        display: none; 
        flex-direction: column;
        width: 100%; 
        background: white;
        transition: all 0.3s;
        position: absolute;
        top: 5vh; 
        left: 0;
        margin: 0;
        padding: 0;
    }
    nav ul li {
        text-align: center; 
        padding: 10px 0;
        width: 100%; 
    }
    nav ul li a {
        display: block; 
    }
    .hamburger-menu {
        display: block; 
    }
    /* Premiere partie */
    #partie1{
        padding-left: 8vw;
        padding-right: 8vw;
        height: 1300px;
    }
    #partie1 h6{
        font-size: 0.8em;
    }
    #partie1 p{
        font-size: 1em;
    }
    #partie1Content{
        flex-wrap: wrap;
        height: 250px;
        width: 85vw;
    }
    #partie1Content img{
        margin-top: 2vh;
        height: 100%;
        width: 100%;
    }
    /* Deuxieme partie */
    .grid-container {
        grid-template-columns: 1fr;
    }
    .grid-item{
        margin-bottom: 50px;
    }
    #size{
        margin-top: 0;
    }
    footer {
        height: 25vh;
        flex-wrap: wrap;
        margin: 0;
        padding: 0;
    }
    footer div{
        width: 45vw;
        height: 9vh;
        font-size: 0.6em;
    }
    .btn3 {
        font-size: 0.7em;
    }
}