body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    color: #333333;
    box-sizing: border-box;
    height: 100%;
   
    
}

header {
   
    background-color: #4caf50;
    color: white;
    padding: 10px 20px;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    width: 100%;
    box-sizing: border-box;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
}
nav h1 {
    margin: 0;
    font-size: 1.8em;
}

.navbar ul {
    list-style: none;
    padding: 0;
}

.navbar ul li {
    display: inline;
    margin-right: 20px;
}

.navbar ul li a {
    color: white;
    text-decoration: none;
}

.navbar ul li a:hover {
    color: #333333;
}

.container{
    background: white;
    padding: 20px;
    max-width: 500px;
    margin: auto;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label{
    display: block;
    margin-top: 10px;
}
input, textarea {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    box-sizing: border-box;
}

button{
    padding: 10px;
    width: 100%;
    margin-top: 15px;
    background-color: #333;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

button :hover {
    background-color: #555;

}

.resultat {
    margin-top: 20px;
    font-weight: bold;
    color: #333;
}

footer{
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
}

main {
  flex: 1;
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}