.h_iframe-aparat_embed_frame {
    position: relative;
}

    .h_iframe-aparat_embed_frame .ratio {
        display: block;
        width: 100%;
        height: auto;
    }

    .h_iframe-aparat_embed_frame iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }