.adaptivnoye {  
  overflow: hidden;
}
.adaptivnoye-vidos {  
  margin: 0 -10px 0 -10px;
}
.adaptivnoye-kanus {
  float: left;
  width: 50%;
  margin-bottom: 20px;
}
.adaptivnoye-reliz {
  position: relative;
  padding-top: 56.25%;
  margin: 0 10px 0 10px;
  box-sizing: border-box;
}
.adaptivnoye-reliz iframe {
  width: 100%;
  height: 100%;
  display: block;
  position: absolute;
  margin: 0;
  top: 0;
  left: 0;
  border: none;
}
@media screen and (max-width:800px){
  .adaptivnoye-kanus {
  width: 100%;
  }
}