* {
  box-sizing: border-box;
}
body {
  background: #fff; 
}
video { 
  width: 100%;
  height: auto;
  background: url('./aege.png') no-repeat;
  background-size: cover;
  transition: 1s opacity;
}
@media screen and (max-width: 1000px) {
  html { background: url('./aege.png') #fff no-repeat center center fixed;}
  body{margin-top:50px;}
}
@media screen and (max-width: 800px) {
  html { background: url('./aege.png') #fff no-repeat center center fixed;}
  body{margin-top:70px;}
}
@media screen and (max-width: 700px) { 
  body{margin-top:100px;}
}
@media screen and (max-width: 500px) { 
  body{margin-top:150px;}
}



* {
  box-sizing: border-box;
}