body {
  margin-top: 10px;
  text-align: center;
}

.btn {
  display: block;
}

.btn:first-of-type {
  margin-top: 10px;
  margin-bottom: 20px;
}

footer a {
  color: #777 !important
}

/* http://mystrd.at/modern-clean-css-sticky-footer/ */
html {
    position: relative;
    min-height: 100%;
}
body {
    margin-bottom: 40px; /* bottom = footer height */
}
footer {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 40px;
    width: 100%;
}