.row_speakers {
	justify-content: center;
}
.card_speaker .img {
	text-align: center;
}
.card_speaker .img img {
    width: 100%;
    max-width: 225px;
}
.card_speaker .txt {
    text-align: center;
    margin-top: 10px;
}
.card_speaker .txt p.role { color: #7F97AB; }
.card_speaker .txt p.social { margin-top: 5px; }