.app_ban{
   background-size: 100% 100% ;
}
.app_ban2{
   background-size: 100% 100% ;
}
.app_ran{
 
   background-size: 100% 100% ;
}
.pro-app-box{
  background: #fff;
  padding: 20px;
  margin: 15px 0;
  text-align: center;
}
.pro-app-box h4 {
  font-size: 12px;
  color: #28166f;
  text-align: left;
}
.pro-app-box h3 {
  font-size: 16px;
  font-weight: bold;
  color: #000;
  letter-spacing: 1px;
  text-align: left;
}


.video-container {
  position: relative;
  padding-bottom: 56.25%;
  padding-top: 30px;
  height: 0;
  overflow: hidden;
  width: 100%;
}
.video-container iframe, .video-container object, .video-container embed {
  position: absolute;
  top: 0;left: 0;
  width: 100%;
  height: 100%;
}