body .elfsight-portal {
    display: block !important;
    width: 100%;
    height: calc(100vh - 55px);
    height: -webkit-calc(100vh - 55px);
    height: -moz-calc(100vh - 55px);
    margin: 0;
}

.elfsight-portal iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: none;
}