.detail-desc img {     max-width: 100%; }   @media screen and (max-width: 768px){       .collapse.navbar-collapse.reg-links{         display: block;       }       .collapse.navbar-collapse.reg-links .navbar-nav {         flex-direction: row;         justify-content: space-between;         width: 100%;         padding: 5px 0 15px;     }   }