精简 - bootstrap响应式自定义屏宽限制 - css - @media screen and ( max-width: 767px) {}

@media screen and ( min-width: 1200px) {

}

@media screen and ( max-width: 1199px) {

}

@media screen and ( max-width: 991px) {

}

@media screen and ( max-width: 974px) {

}

@media screen and ( max-width: 767px) {

}

@media screen and ( max-width: 320px) {

}