.mobile-stub {
  display: none;
}
@media only screen and (max-width: 1100px) {
  #wrapper,
  .useful-information,
  #footer {
    display: none;
  }
  .mobile-stub {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background-color: #ff8828;
    background-image: url(../img/banner-background.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    font-size: 40px;
    font-weight: 800;
    color: #ffffff;
    text-transform: uppercase;
  }
  .mobile-stub .mobile-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 143px;
    height: 163px;
    margin-bottom: 20px;
    background-color: #ffffff;
  }
  .mobile-stub .counter {
    width: 280px;
    font-size: 11px;
    text-align: center;
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
  }
  .mobile-stub .counter > span {
    width: 100%;
    flex-shrink: 0;
  }
  .mobile-stub .counter-day,
  .mobile-stub .counter-hours,
  .mobile-stub .counter-minutes {
    margin: 0 10px;
  }
  .mobile-stub .counter-num {
    margin: 5px 0;
    font-size: 40px;
  }
}