body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    font-family: Arial, sans-serif;
}
.popup {
    display: none;
    position: absolute;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}
button {
    padding: 15px 25px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 21px;
}
.openPopup{
    padding: 20px 30px;
    border: none;
    border-radius: 35px;
    cursor: pointer;
    font-size: 26px;
    background-color: darkgrey;
}
.openPopup:hover{
    background-color: #c2c2c2;
}
.btn-oui {
    background-color: #4CAF50;
    color: white;
}
.btn-non {
    background-color: #FF0000;
    color: white;
    transition: all 250ms;
}