.tip-for-new-file {
  margin: 0 auto;
  padding: 2em 1em;
  align-self: flex-start; /* for repo wiki mode */
}
@media (min-width: 768px) {
  .tip-for-new-file {
    padding: 5em 8em;
  }
}
.big-new-file-button {
  padding: .9em 2em 1em; 
  border-radius: 8px; 
  margin: 0 0.75em 1.5em;
  cursor: pointer;
  width: 160px;
  background: #fff;
  border: 1px solid #d1d1d1;
}
.big-new-file-button:hover,
.big-new-file-button:focus {
  border-color: #eb9205;
  color: #eb8205;
}