Hi,

Please replace in style.css at line 1047 this :

ul.fullwidth-slider li.slide .caption .slide-caption .vertical-align-middle {
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    padding-top: 100px;
    box-sizing: border-box;
}

ul.fullwidth-slider, ul.fullwidth-slider .caption-inside {
    height: 400px;
}