.boxcamera {
    display:grid;
    grid-template-columns: 1fr 1fr; /* chia làm 4 cột  1fr 1fr 1fr 1fr;*/
    grid-column-gap: 20px; /* khoảng cách giữa các cột */
    grid-row-gap: 20px; /* khoảng cách giữa các hàng cột */
}
/* size màn hình dưới 700px sẽ về 2 cột */
@media (max-width: 700px) {
    .boxcamera {grid-template-columns: 1fr 1fr;} /* thành 2 cột */
}
/* size màn hình dưới 300px sẽ về 1 cột */
@media (max-width: 480px) {
    .boxcamera {grid-template-columns: 1fr;} /* thành 1 cột */
}
.boxcamera div {
    /*padding:10px;*/
    border:2px solid #999;
}
.embed-youtube {
    background-color: #000;
    margin-bottom: 30px;
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
    cursor: pointer;
}
.embed-youtube, .embed-youtube p {
    color: #fff;
    font-weight: 600;
}
.embed-youtube img {
    width: 100%;
    top: 0%; /*-16.84%;*/
    left: 0;
    opacity: 0.7;
}
.embed-youtube .embed-youtube-play {
    width: 68px;
    height: 48px;
    background-color: #333;
    box-shadow: 0 0 30px rgba( 0,0,0,0.6 );
    z-index: 1;
    opacity: 0.8;
    border-radius: 6px;
}
.embed-youtube .embed-youtube-play:before {
    content: "";
    border-style: solid;
    border-width: 15px 0 15px 26.0px;
    border-color: transparent transparent transparent #fff;
}
.embed-youtube img,
.embed-youtube .embed-youtube-play {
    cursor: pointer;
}
.embed-youtube img,
.embed-youtube iframe,
.embed-youtube .embed-youtube-play,
.embed-youtube .embed-youtube-play:before {
    position: absolute;
}
.embed-youtube .embed-youtube-play,
.embed-youtube .embed-youtube-play:before {
    top: 50%;
    left: 50%;
    transform: translate3d( -50%, -50%, 0 );
}
.embed-youtube iframe {
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
}

.embed-youtube .embed-youtube-play:hover {
    background-color: #f00;
}
/*******************/

.embed-facebook {
    background-color: #000;
    cursor: pointer;
    margin-bottom: 30px;
    overflow: hidden;
    padding-top: 56.25%;
    position: relative;
}

.embed-facebook .embed-facebook-play, .embed-facebook .embed-facebook-play:before {
    left: 50%;
    top: 50%;
    transform: translate3d(-50%,-50%,0);
}
.embed-facebook .embed-facebook-play, .embed-facebook .embed-facebook-play:before, .embed-facebook iframe, .embed-facebook img {
    position: absolute;
}
.embed-facebook img {
    position: absolute;
    left: 0;
    opacity: .7;
    top: 3%;
    width: 100%;
}
.embed-facebook .embed-facebook-play, .embed-facebook img {
    cursor: pointer;
}
.embed-facebook .embed-facebook-play {
    background-color: #333;
    border-radius: 6px;
    box-shadow: 0 0 30px rgb(0 0 0 / 60%);
    height: 48px;
    opacity: .8;
    width: 68px;
    z-index: 1;
}
.embed-facebook .embed-facebook-play:before {
    border-color: transparent transparent transparent #007bff;
    border-style: solid;
    border-width: 15px 0 15px 26px;
    content: "";
}
.embed-facebook .embed-facebook-play:hover {
    background-color: rgb(24, 119, 242);
}
.embed-facebook iframe {
    height: 100%;
    left: 0;
    top: 0;
    width: 100%;
}