.videobox {position:relative;height:169px;position:relative;}
.videobox .play-button {position: absolute;
  width: 64px; 
  height: 64px;
  top: 50px; 
  left: calc( 50% - 32px );
  background-image: url(../Icons/playwhite.svg);
  background-size: 64px 64px;
  background-repeat: no-repeat;
  background-position: center center;
  background-color: #007841;
  border-radius: 32px;
  transition: background-color .5s;
}
.videobox:hover .play-button{
 background-color: #40B881;
}