totallnet
Hi
The height of the video is depend on the setting applied in Guru
change Default video size on Settings > General to 400 .
And
add custom css to /media/files/guru/guru_user_custom.css
#text_3 {
width: 95% !important;
margin: 0 auto !important;
position: relative;
overflow: hidden;
padding-top: 56.25%;
}
#text_3 > iframe {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
border: 0;
}