.middle_section {
    width: 100%;
    margin: 0;
    height: calc(100% - 260px  );
    margin: auto;
    position: absolute;
    top: 49.5%;
    left: 50%;
    transform: translate(-50%, -50%);
    /*z-index: 9999999;*/
}
.video {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    width: 45%;
    display: none;
}
.video button {
    z-index: 99999;
    position: absolute;
    top: 0;
    right: 0;
}
#video_frame {
    position: relative;
    overflow: hidden;
    padding-top: 57%;
}

#video_frame iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
}



#overlay {
    position: fixed;
    display: none;
    width: 100%; 
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 777;
    cursor: pointer;
}

.drop_contain {
    position: absolute;
    top: -110%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 999;
    max-width: 650px;
    width: 70%;
    max-height: 400px;
    overflow-y: scroll;
    transition: .4s all linear;
}
#drop_contain {
    position: relative;
}
#drop_contain button {
    z-index: 99999;
    position: absolute;
    top: 0;
    right: 0;
}
.drop_contain ul {
    padding: 0;
    list-style-type: none;
    margin: 0;
}
.drop_contain ul li {
    background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #787878), color-stop(0.5, #5E5E5E), color-stop(0.51, #707070), color-stop(1, #838383));
    background-image: -moz-linear-gradient(center bottom, #787878 0%, #5E5E5E 50%, #707070 51%, #838383 100%);
    background-color: #5f5f5f;
    padding: 5px;
    margin: 1px 0;
    cursor: pointer;
    font-size: 18px;
    color: #fff;
}
.drop_contain ul li img {
    width: 50px;
    margin-right: 20px;
}

.drop_contain ul li:hover {
    background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #999999), color-stop(0.5, #808080), color-stop(0.51, #8c8c8c), color-stop(1, #b3b3b3));
    background-image: -moz-linear-gradient(center bottom, #999999 0%, #8c8c8c 50%, #8c8c8c 51%, #b3b3b3 100%);
    background-color: #808080;
}

@media (max-width: 992px){
    .video {
        width: 80%;
    }
    .drop_contain {
        max-width: 90%;
        width: 80%;
        max-height: 500px;
    }
    .drop_contain ul li {
        font-size: 40px;
    }
}
@media screen and (max-width: 692px){
    .video h5 {
        font-size: 4vw;
    }
    
    
}
@media screen and (max-width: 490px){
    .video {
        width: 80%;
    }
    .video button {
        padding: 2px 3px;
    }
    #video_frame {
        padding-top: 57.50%;
    }   
}
@media screen and (max-width: 385px){
    .drop_contain ul li {
        padding: 3px;
        font-size: 16px;
    }
    .drop_contain ul li img {
        width: 40px;
        margin-right: 15px;
    }   
}