.pc-video-wrap {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    z-index: 1001;
    text-align: center;
    margin: 0 auto;
    display: none;
}

.pc-video-mask {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    z-index: 1;
    background: rgba(0,0,0,.5);
}

.pc-video-body {
    position: absolute;
    margin: 0 auto;
    width: 100%;
    text-align: center;
    top: 20px;
    z-index: 9;
}

.close-mask-btn-wrap {
    position: relative;
    float: right;
    height: 20px;
    width: 20px;
    border-radius: 10px;
    margin: 0 auto;
    right: 0px;
}

@media (max-width: 321px){
.pc-video-body {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /*width: 1000px;*/
  z-index: 9;
}
}

.pc-video-biank {
    width: 75%;
    height: 100%;
    padding: 5px;
    background: #fff;
    border-radius: 10px;
    margin: 0 auto;
}

.close-mask-btn {
    display: block;
    position: relative;
    right: 0;
    left: 0;
    bottom: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 9;
    border-radius: 100px;
    background: #333;
    cursor: pointer;
}

.close-mask-btn::after {
    height: 3px;
    width: 15px;
    position: absolute;
    content: "";
    background: #fff;
    top: 45%;
    left: 15%;
    transform: rotate(-45deg);
}

.close-mask-btn::before {
    height: 3px;
    width: 15px;
    position: absolute;
    content: "";
    background: #fff;
    top: 45%;
    left: 15%;
    transform: rotate(45deg);
}

.pc-video-body .pc-video {
    width: 100%;
    border-radius: 10px;
    margin: 0 auto;
    overflow: hidden;
    z-index: -999;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    height: 100%;
    border: #5e3819 solid 5px;
    transition: .4s;
}

@media (min-width:1500px) {


}

@media (max-width: 1440px){

}

@media (max-width:1366px) {

}

@media (max-width:1280px) {
    
}

@media (max-width:1024px) {
}

@media only screen and (min-width: 800px) and (max-width: 900px) {
}

@media only screen and (min-width: 900px) and (max-width: 1000px) {
}
    
@media (max-width:798px) {
}

@media (max-width:640px) {
}

@media (max-width:480px) {
}

@media (max-width:450px) {
}

@media (max-width:320px) {
}