body {
   background-image:linear-gradient(to bottom, #7aa, #333);
   background-attachment: fixed;
 }
h1 {
    font: verdana;
    font-size: 1em;
    text-align: center;
    color: #e6e6e6;
 }
h1 img {
   vertical-align: middle;
 }
main {
    max-width: 30em;
    padding: 0.5em;
    margin: auto;
 }
video {
    display: block;  
    width: 100%;
    height: auto;
    border: 0.2em solid #000;
    border-top-left-radius: 2em;
    border-top-right-radius: 2em;
    overflow: hiden;
 }