.container {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding-top: 75%; /* 640x480 Aspect Ratio (divide 480 by 640 = 0.75) */
}

/* Then style the iframe to fit in the container div with full height and width */
.responsive-iframe {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
}

.buttonreload {
  background-color: #e7e7e7; 
  color: black;
  font-size: 28px;
  padding: 14px 40px;
}