.mod-header-logo{
max-width: inherit;
}

.social-link.newsletter {
    background-color: #1a3663; /* même bleu que les autres */
    border-radius: 50%; /* rend le bouton parfaitement rond */
    height: 40px;
    width: 40px;
    padding: 5px;
    text-align: center;
    display: inline-block;
    transition: all 73ms ease-in-out;

}

.social-link.newsletter:hover {
    background-color: #0ca3a3;
}

.social-link.newsletter .fa-envelope-open-text {
    font-size: 20px;
    color: white;
    line-height: 30px; /* centrage vertical */
}


.line-conference {
    padding-bottom: 5rem;
    padding-top: 5rem;
}