html { 
    height: calc(100% - 2px); 
    background-color: #9cc; 
    border: 1px solid #000;
 }
body {
   height: calc(100% - 2em);
   padding: 0.5em; 
   background-image: linear-gradient(to bottom, #9cc, #144);
   background-attachment: fixed;
   font-family: "verdana", sans-serif;
   box-shadow: inset 0 0 1.25em rgba( 0, 0, 0, 0.8 );
 }
h1 {
    margin: 0.5em;
    font-size: 1.4em;
    font-weight: normal;
    text-align: center;
    color: #444;
 }
#video-container {
    max-width: 22.5em;
    padding: 0.5em;
    margin: auto;
 }
video {
    display: block;  
    width: 100%;
    height: auto;
    border: 0.1em solid #000;
    border-top-left-radius: 2em;
    border-top-right-radius: 2em;
    box-shadow: 0.6em 0.6em 0.6em  rgba(0, 0, 0, 0.3);
 }