#navbar{height:180px}#navbar-container{flex-direction:column;padding:20px 0}#navbar-items{flex-direction:column;text-align:center;width:100%}.btn{display:inline-block;padding:10px 20px;font-size:16px;text-align:center;text-decoration:none;background-color:#3498db;color:#fff;border-radius:5px;transition:background-color .3s ease;animation:pulse 1.5s infinite}.btn:hover{background-color:#e74c3c}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}100%{transform:scale(1)}}#navbar-items li:nth-child(2){border-top:1px solid #333;border-bottom:1px solid #333}#showcase-container{padding:40px}#clients-container{grid-template-columns:repeat(2,1fr)}.client{width:50%}#features-container{grid-template-columns:1fr}#features-container .feature:nth-child(2){margin:15px 0}#product-container{flex-direction:column}#items{width:90%}.item{flex-direction:column;align-items:center;text-align:center}#Testimonials-container{grid-template-columns:1fr}.Testimonials-image{width:100%}#gallery-container{grid-template-columns:1fr}.gallery-image{width:100%}