body {
  background-image: url("fond-ecran.jpg"); 
  background-size: cover;                   
  background-repeat: no-repeat;             
  background-position: center center;       
  background-attachment: fixed;
	padding-top: 70px;  
}
* {
    box-sizing: border-box;   
}
.app-bar {
    position: fixed;        
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: rgba(0, 0, 0, 0.6); 
    backdrop-filter: blur(5px);     
    
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 0 20px;
    z-index: 1000;
}

.logo {
    font-family: "Trebuchet MS";
    font-size: 1.5rem;
    color: white;
    font-weight: bold;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    font-family: "Trebuchet MS";
    font-size: 1rem;
}

.nav-links a:hover {
    text-decoration: underline;
}

h1 {
  font-family: "Trebuchet MS"; 
  color: white; 
  text-align: center;
}

.p1 {
  font-family: "Trebuchet MS"; 
  color: white; 
  text-align: center;
}

.p2 {
  font-family: "Trebuchet MS"; 
  color: white; 
  text-align: center;
}

.p3 {
  font-family: "Trebuchet MS"; 
  color: white; 
  text-align: center;
}

.image-container {
    text-align: center; 
    margin: 30px 0;     
}

.img {
    width: 200px;          
    border-radius: 10px;   
    box-shadow: 0 0 10px rgba(0,0,0,0.3); 
}

.p4 {
    text-align: center; 
    font-family: "Trebuchet MS";
    color: white;
    margin-top: 10px;
}

.lien {
    display: block; 
    color: white; 
    text-align: center;
    margin: 0 auto;
    width: fit-content;
}