.tab-js { display: none; }
.tab-active-js { display: block; }

.tabs-header {
  font-size: 25px;
  text-align: center;
  margin: 3rem auto; }

.centering-layer {
  width: 100%;
  max-width: 100%;
  margin: 2rem auto; }

.tabs-buttons {
  font-size: 14px; }

  .tabs-buttons__btn {
    display: block;
    width: 100%;
    text-decoration: none;
    font-weight: bold;
    border: 2px solid #2f5d9a;
    border-bottom-width: 0;
    color: #2f5d9a;
    background-color: #fff;
    outline: none;
    padding: 12px 20px;
    cursor: pointer;
    transition: background-color .3s; }

  .tabs-buttons__btn:hover,
  .tabs-buttons__btn--active {
    color: #fff;
    background-color: #2f5d9a; }



@media screen and (min-width: 640px) {
  .tabs-buttons {
    font-size: 0; }

  .tabs-buttons__btn {
    width: auto;
    display: inline-block;
    font-size: 14px; }

  .tabs-buttons__btn:not(:last-child) {
    margin-right: 5px; }
}