*{
    margin: 0; padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}
body {
    min-height: 100vh;
}
header {
    height: 500px;
    background-color: #186251;
    background-image: url(./tree.png);
    background-repeat: no-repeat;
    background-size: contain;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
    box-shadow: 0 0 20px rgba(0,0,0,.2)
}
nav{
    width: 800px;
}
nav ul {
    display: flex;
    justify-content: space-between;
    list-style: none;
}
nav ul li {
    text-transform: uppercase;
    margin: 20px;
}
nav ul li a {
    padding: 10px;
    color: white;
    text-decoration: none;
    font-weight: bold;
}
nav ul li a:hover:not(.active) {
    text-decoration: underline;
    color: black;
}
nav ul li a.active,
nav ul li a.active:hover{
    background-color: white;
    color: #186251;
    border-radius: 5px;
}
.titre{
    margin-top: 350px;
    font-size: 45px;
    text-align: center;
    text-transform: uppercase;
    font-weight: bold;
}
section {
    padding: 10px;
    padding-bottom: 80px;
    width: 760px;
    color: #52575C;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}
section h1 {
    font-size: 45px;
    letter-spacing: 4px;
    text-align: center;
}
section p {
    padding: 10px 0;
    font-size: 16px;
    width: 760px;
    /* text-align: justify; */
}
footer {
    padding: 10px 0;
    height: 40px;
    background-color: #186251;
    box-shadow: 0 0 20px rgba(0,0,0,.2);
    color: white;
    display: flex; justify-content: center; align-items: center;
    font-size: 18px;
    position: absolute;
    width: 100%;
}