.video_preview{
    display: block;
    position: relative;
    border: 1px solid #e8e8e8;
    border-radius: 5px;
}
.video_preview_img img{width:100%;}
.video_preview_text{padding:10px;min-height: 85px;}
.video_preview_text b{text-transform:uppercase;}
.video_preview_img {max-height: 735px; overflow: hidden; display: block;min-height: 235px;}

.teachers-center {
    display: flex;
    justify-content: center;
}