h1{

    color: #03b2cb

}




body {

    padding: 0;
    margin: 0;
}

header
     {
        background-image: url("logo 1280x720.jpg");
        background-repeat: no-repeat;
        background-attachment: fixed;
        background-size: 100% 100%;
     }

     #logo 1280x720.jpg

     {
        width: 100%;
        height: 800px;

     }


    
body {
  background-image: url('logo 1280x720.jpg');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: 100% 100%;
}


@media screen and (min-width: 800px{
  #logo 1280x720.jpg
  height: 600px;
}