body{
    box-sizing: border-box;
    width: 100%;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 0;
    display: flex;
    align-items: center;
    flex-direction: column;
    background-color:  #f4f4f9;
}
#container-title{
    width: 100%;
    height: 100vh;
    background-image: url('../img/ski.jpg');
    background-position: center;
    background-size: cover;
    margin: 0;
    padding: 30px;
    display: flex;
    justify-content: center;
    flex-direction: column;
    box-sizing: border-box;

}

#container-title h1{
    font-size: 6em;
    margin: 0;
}


#container-title h2{
    margin: 0;
    
}
#container-title a{
    padding: 15px 30px;
    border-radius: 15px;
    background-color: transparent;
    width: 15%;
    text-align: center;
    margin-top: 15px;
    border: 4px solid black;
    font-weight: bold;
    cursor: pointer;
    transition: 1s ease;
    align-content: center;

}

#container-title a:hover{
    background-color: black;
    color: aliceblue;
    transition: 1s ease;
}

.container{
    width: 100%;
    height: 100vh;
    display: flex;
}
#container-gauche{
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

#container-gauche ul li{
    margin: 25px;
    cursor: pointer;   
}
#container-gauche ul li a{
   text-decoration: none;
   color: black;   
}


#container-gauche ul{
    list-style: none;
    display: flex;
    align-items: center;
    flex-direction: column;
}
.container h1{
    font-size: 3em;
    flex: 1;
}

.seconde{
    flex-direction: column;
    box-sizing: border-box;
    padding: 30px;
    

}

.container-int{
    display: flex;
    height: 100%;
    padding: 15px;
    box-sizing: border-box;

}

.tranche{
    flex: 1;
    height: 100%;
    box-sizing: border-box;

}
.sponsor{
    
    background-color: white;
    width: 100%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border-radius: 30px;
    height: 100%;
    display: flex;
    justify-content: center;
}