/* 超小屏幕 */ @media (max-width:575px) { .container-self{ } } /* 小屏幕 */ @media (min-width:576px) and (max-width:767px) { .container-self{ width: 540px; } } /* 中屏幕 */ @media (min-width:768px) and (max-width:991px) { .container-self{ width: 720px; } } /* 大屏幕 */ @media (min-width:992px) and (max-width:1199px) { .container-self{ width: 960px; } } /* 超大屏幕 */ @media (min-width:1200px){ .container-self{ width: 1140px; } }