body {
 background: url(pictures/Batch9/IMG_3190.JPEG) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
 background-color: #cccccc;
 text-align: center;
}
.container {
	  display: flex;
	  align-items: center;
	  justify-content: center;
	  height: 200px;
 }
button {
	  padding: 10px;
}