.menu-link {
  position: relative;
  text-decoration: none;
  cursor: pointer;
}
.menu-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0%;
  height: 1px;
  background: #ffffff;
  transition: width 0.35s ease;
}
.menu-link:hover::after {
  width: 100%;
}
</style>
<a class="menu-link">Услуги</a>