.online-video-block {
  width: 660px;
  height: 351px;
  background: url('img/s2.jpg') no-repeat;
  box-sizing: border-box;
  margin: 100px 0 0 0;
  padding: 75px 0 0 80px;
  position: relative;
  
 border-radius: 10px; 
}
.online-video-block:after {
  position: absolute;
  display: block;
  content: '';
  width: 161px;
  height: 81px;
  background: url('img/antenna.png') no-repeat;
  top: -80px;
  left: 161px;
}
/*--------------------t1v.ru------------------------------------*/


@media screen and (max-width: 1023px) {

 
  .online-video-block {
    width: 100%;
    height: auto;
    background: none;
    padding: 0;
  }
  .online-video-block iframe {
    width: 100%;
  }

}




/*t1v.ru n1

@media screen and (max-width: 479px) {
  .main_content .left_side .latest_news_item .item_content img,
  .online-video-block:after {
    left: 100px;
  }
}
*/