table {
  border: 1px solid black;
} 
td {
  border-left: 1px solid black;
  border-top: 1px solid black;
  border-collapse: collapse;
}

.embed-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  max-width: 100%;
}
.embed-container iframe, .embed-container object, .embed-container embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 80%;
  height: 80%;
}