/ / @media (min-width:576px) and (max-width:767px) {/ / @media (min-width:576px) and (max-width:767px) { .container-self{ width: 540px; }} / / @media (min-width:768px) and (max-width:991px) {. Container -self{width: 720px; }} / / @media (min-width:992px) and (max-width:1199px) {. Container -self{width: 960px; }} / / @media (min-width:1200px){. Container -self{width: 1140px; }}Copy the code