html,
body {
  font-family: sans-serif;
  background-image: url("../image/background.jpg");
   position: fixed;
   overflow: hidden;


  
}

/* Make content area fill the entire browser window */
html,
.fullscreen {
  display: flex;
  height: 100vh;
  margin: 0;
  padding: 0;
  width: 100vw;
}

.background {
	color: #F0F0F0;	/* must be in a good contrast to background image */
  background-color: black;
  background-image: url("../image/background.jpg");
  background-size: cover;


}

/* Center the content in the browser window */
.container {
  margin: auto;
  text-align: center;
}