.logo{
    width: 40%;
    border-radius: 90%;
    margin-left: 30px;
}
.h3{
    color: white;
    text-decoration: underline;
    margin-left: 30px;
}
.header{
    display: inline-flex;
    border: 2px solid gray;
}
.tete{
    margin-left: 20px;
    background-color:grey;
}
.h4{
    color: white;
    text-decoration: underline;
    margin-left: 30px;
}
.contenu{
    margin-left: 20px;
    background-color: grey;
}
.h5{
    text-decoration: underline;
    margin-left: 30px;  
}