.introduction .video-inner{text-align:center;margin-top:20px;}
@media (max-width:768px){.introduction .video-inner{padding:0 15px;}}
 .introduction .content{display:flex;max-width:80%;margin:0 auto}
.introduction .content .video-inner,.introduction .content .right{flex:1}
.introduction .welcome{margin:0}
.introduction .content .right{display:flex;flex-direction:column;align-items:center;justify-content:center}
@media (max-width:768px){.introduction .content{max-width:100%;display:unset}
}