.banner_mb{ display:none;}
.banner_mb img{ width:100%;}
.banner_video {
    width: 100%;
    overflow: hidden;
    position: relative;
    margin: 0 auto;
    text-align: center;
	display:block;

}

.banner_video  h4 {
    color: #fff;
    font-size: 80px;
    position: absolute;
    top: 35%;
    left: 0;
    right: 0;
}

.banner_video  p {
   color: #fff;
    font-size: 30px;
    position: absolute;
    top: 53%;
    left: 0;
    right: 0;
}

.banner_video  .detail {
    	 
    border: 1px solid #fff;
    color: #fff;
     top: 63%;
    position: absolute;
   width:250px;
    font-size: 20px;
	margin:0 auto;
    text-decoration: none;
	 left: 0;
    right: 0;
	height:60px;
	line-height:60px
}

.banner_video  .detail:hover {
    color: #fff;
    border: 1px solid #144cd1;
    background:#0A63B1
}

@media screen and (max-width:900px) {
 
.banner_video  h4 {
    color: #fff;
    font-size: 30px;
    position: absolute;
    top: 20%;
    left: 0;
    right: 0;
}

.banner_video  p {
   color: #fff;
    font-size: 20px;
    position: absolute;
    top: 39%;
    left: 0;
    right: 0;
}

.banner_video  .detail {
    	 
    border: 1px solid #fff;
    color: #fff;
     top: 50%;
    position: absolute;
   width:200px;
    font-size: 14px;
	margin:0 auto;
    text-decoration: none;
	 left: 0;
    right: 0;
	height:50px;
	line-height:50px
} 
 
}


@media screen and (max-width:480px) {
.banner_video{ display:none;}
.banner_mb{ display:block; margin:0 auto; text-align:center; }
.banner_mb img{ width:100%;}


.banner_mb h4 {
    color: #fff;
    font-size:1.6rem;
    position: absolute;
    top:36%;
    left: 0;
    right: 0;
}

.banner_mb p {
   color: #fff;
    font-size:1rem;
    position: absolute;
    top:50%;
    left: 0;
    right: 0;
}

.banner_mb .detail {
    	 
    border: 1px solid #fff;
    color: #fff;
     top: 66%;
    position: absolute;
   width:80%;
    font-size:20px;
	margin:0 auto;
    text-decoration: none;
	 left: 0;
    right: 0;
	height:40px;
	line-height:40px;

}

.banner_mb .detail:hover {
    color: #fff;
    border: 1px solid #144cd1;
    background:#0A63B1
}
}

@media screen and (max-width:320px) {


.banner_mb h4 {
    color: #fff;
    font-size:1.4rem;
    position: absolute;
    top:36%;
    left: 0;
    right: 0;
}

.banner_mb p {
   color: #fff;
    font-size:.9rem;
    position: absolute;
    top:50%;
    left: 0;
    right: 0;
}


}