@media only screen and (max-width:767px){.your-video-class{height:300px}}@media only screen and (min-width:768px) and (max-width:1024px){.your-video-class{height:500px}}@media only screen and (min-width:1025px){.your-video-class{height:700px}}@media only screen and (max-width:767px){.your-video-class{height:300px}}@media only screen and (min-width:768px) and (max-width:1024px){.your-video-class{height:500px}}@media only screen and (min-width:1025px){.your-video-class{height:700px}}