body {
  padding-top: 40px;
  padding-bottom: 40px;
}

.videowrapper {
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 30px; 
    height: 0; 
    overflow: hidden;
}
.videowrapper iframe, 
.videowrapper object,
.videowrapper embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}