#btn{
    width: 80%;
    height: 40px;

    flex-shrink: 0;
    border-radius: 31px;
    border-color: transparent;
    background: var(--bleu);
    color: var(--jaune);
    text-align: center;
    font-family: "Titan One";
    font-size: 20px;
    font-style: normal;
    font-weight: 400;
    line-height: normal;
}
#btn:hover{
    background: var(--jaune);
    color: var(--noir);
    cursor: pointer;
}
input, select,textarea{
    width: 80%;
    height: 40px;
    flex-shrink: 0;
    border-radius: 31px;
    border: 2px solid var(--noir);
    background: var(--blanc);
    margin-bottom: 20px;
    padding-left: 1.5rem;
}
textarea{
    height: 8rem;
}
input::placeholder {
    color: var(--gris);
}
input:invalid, select:invalid, textarea:invalid {
    border: 2px solid var(--noir);
}
.cadre{
    display: block;
    justify-content: center;
    align-items: center;
    text-align: center;

}
form{
    padding: 2rem 0;
}
.pconf{
    color: var(--gris);
    font-size: 14px;
}

.section3{
    display: flex;
    justify-content: center;
}