.mb30{
  margin-bottom: 30px;
}

.a.cat{
    text-align: center;
    text-decoration: none;
    background-color: #ccc;
    color: #333;
    display: block;
    width: 100%;
    padding-top: 2px;
}

.a.cat:nth-child(n + 2){
  display: none;
}

@media(max-width:599px){
  .info-btn,.s-offer-btn{
    width: 90%;
    margin:0 auto; 
    float: none;
  }
}