remove dark background in video thumb

/* use this code if you want this aplly to gallery and video formated post */

.jeg_post.format-gallery .jeg_thumb:before, .jeg_post.format-video .jeg_thumb:before {
    background-color: transparent;
}

/* use this code if you oinly want this apply only in video formated post */

.jeg_post.format-video .jeg_thumb:before {
    background-color: transparent;
}