Go to your specific Live Editor >> click on Page Setting >> Other Scripts >> Custom CSS >> insert the code below:
/* for Launch Navigation Style 1*/
.video-navigation-1 a{
line-height: 0;
font-size: 0;
color: transparent;
}
/* for Launch Navigation Style 2*/
.video-navigation-2 a{
line-height: 0;
font-size: 0;
color: transparent;
}
/* for Launch Navigation Style 10*/
.video-navigation-10 a{
line-height: 0;
font-size: 0;
color: transparent;
}