.cool-link {
  display: inline-block;
  color: #000;
  text-decoration: none; }

.cool-link::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #fff;
  transition: width .3s; }

.cool-link:hover::after {
  width: 100%; }

.auth__link a {
  color: #f1f1f1;
  font-weight: bold; }

.auth__link a:hover {
  color: #fff;
  text-decoration: underline; }

.auth__img {
  margin: 40px auto; }

.auth__wrapper {
  background: linear-gradient(to left, #008bff 5%, #34cdf3); }

.auth__img img {
  max-height: 100px; }