body{
  background-image:url("background.jpg");
  background-size:cover ;
  font-family:Arial;
background:url(images/sd.gif) center center / cover no-repeat ;
 background-attachment: fixed;
}
.container{
  width:80%;
  background-color:black;
  padding-top:20px;
  margin:20px auto;
  border-radius:10px;
  text-align:center;
}
nav{
  margin-bottom:20px;
}
nav a {
  color:blue;
  margin-right:15px;
  text-decoration:none;
}
h1,p,h2{
  text-align:center;
  color:white;
}
.item{
  background-color:#383838;
  padding:15px;
  margin:15px;
}
img{
  border:2px solid white;
}
footer{
  text-align: center;
  margin-top:20px;
  padding:10px;
}