.box-speaker__avatar {
    height: 110px;
    background-color: #FFFFFF;
    background-position: center top;
    -webkit-flex: 0 0 110px;
            flex: 0 0 110px;
    margin-right: 15px;
  }

@media print, screen and (min-width: 769px) {

.box-speaker__avatar {
      height: 140px;
      -webkit-flex: 0 0 140px;
              flex: 0 0 140px;
      margin-right: 30px
  }
    }