@media (max-width:520px){
  .wrap{padding:0 6px;}
  .banner{height:clamp(140px, 28vh, 260px);border-radius:0px;}
  .banner-title{font-size:clamp(1.05rem, 5vw, 1.6rem);}
  .main-link {gap:0.5rem;justify-content:space-between;padding:0.4rem 0.8rem;font-size:0.9rem;
    flex:1 1 auto;text-align:center;
  }
}
@media (max-width: 700px){
  .sb{flex:1 1 100%;/* volle Breite = untereinander */}
}

@media (max-width: 600px){
  .instagram-link{width:40px;height:40px;}
  .instagram-icon{width:20px;height:20px;}
}