body {
  margin: 4em 2em;
  background-position:center;
  background-size:cover;
  background-repeat:no-repeat;background-color:#000000;
  background-style:flat;
  background-image:url(background.jpg);
}
.tree {
  margin: 0 auto;
  text-align: center;
  width: 100%;
  max-width: 800px;
}
.tree .username {
  text-transform: uppercase;
  font-weight: 600;
  margin: 2em;
}
.tree .links a {
  margin: 0.75em auto;
}
.tree .footer {
  margin: 2rem;
}
.tree .profile-pic {
  width: 150px;
  border-radius: 50%;
  text-align: center;
}
a.btn {
  /*background-color: #fff;*/
}


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