_mobile.scss

@media (max-width: 700px) {
    .showcase {
        height: 300px;

        &-content {
            text-align: center;
            display: block;

            .desktop-img {
                display: none; 
                 
               }
       
               .mobile-img {
                display: block;
                width: 30%; 
                margin-right: 33%;
                margin-left: 33%;
                transform: rotate(90deg);
                  }

                  h1 {
                    padding-top: 10%;
                    font-size: 2.3rem;
                  }
        }
    }
}