body {
color: #15b84f
}
.centered {
  text-align: center;
}
body{
    background-image: url(background.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: cover;
}
.alert {
  background-color: #33f077;
  padding: 3px;
  margin: 5px;
  line-height: 18px;
  width: 500px;
  
}