#save-username-button {
  background-color: #2e2e2e;
  border: 1px solid #353535;
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
  margin-inline: auto;
  margin-top: 10px;
  max-width: 200px;
  padding: 10px;
  width: 100%;
}

#save-username-button:hover {
  background-color: #454545;
}

#save-username-button:active {
  background-color: #191919;
}

@media (min-width: 1367px) {
  #save-username-button {
    font-size: 25px;
    max-width: 250px;
    padding: 15px;
  }
}