我使用Bootstrap 3来构建一个响应式布局，我想根据屏幕大小调整一些字体大小。 我如何使用媒体查询来实现这种逻辑?
当前回答
使用IE的媒体查询;
@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px)
and (orientation : landscape) and (-ms-high-contrast: none), (-ms-high-contrast: active) {
}
@media only screen
and (min-device-width : 360px)
and (max-device-width : 640px)
and (orientation : portrait) and (-ms-high-contrast: none), (-ms-high-contrast: active) {
}
其他回答
使用IE的媒体查询;
@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px)
and (orientation : landscape) and (-ms-high-contrast: none), (-ms-high-contrast: active) {
}
@media only screen
and (min-device-width : 360px)
and (max-device-width : 640px)
and (orientation : portrait) and (-ms-high-contrast: none), (-ms-high-contrast: active) {
}
我们在Less文件中使用以下媒体查询在网格系统中创建关键断点。
/* Small devices (tablets, 768px and up) */
@media (min-width: @screen-sm-min) { ... }
/* Medium devices (desktops, 992px and up) */
@media (min-width: @screen-md-min) { ... }
/* Large devices (large desktops, 1200px and up) */
@media (min-width: @screen-lg-min) { ... }
参见Bootstrap
如果你正在使用LESS或SCSS/SASS，并且你正在使用Bootstrap的LESS/SCSS版本，你也可以使用变量，只要你能访问它们。@full-decent的答案的LESS翻译如下:
@media(max-width: @screen-xs-max){}
@media(min-width: @screen-sm-min){} /* deprecated: @screen-tablet, or @screen-sm */
@media(min-width: @screen-md-min){} /* deprecated: @screen-desktop, or @screen-md */
@media(min-width: @screen-lg-min){} /* deprecated: @screen-lg-desktop, or @screen-lg */
还有@screen-sm-max和@screen-md-max变量，它们分别比@screen-md-min和@screen-lg-min小1个像素，通常用于@media(max-width)。
编辑:如果你使用SCSS/SASS，变量以$开始，而不是@，所以它会是$screen-xs-max等。
@media only screen和(max-width: 1200px) {} @media only screen (max-width: 979px) {} @media only screen (max-width: 767px) {} @media only screen和(max-width: 480px) {} @media only screen and (max-width: 320px) {} @media (min-width: 768px) and (max-width: 991px) {} @media (min-width: 992px) and (max-width: 1024px) {}
下面是一个更模块化的例子，使用LESS来模拟Bootstrap，而不导入LESS文件。
@screen-xs-max: 767px;
@screen-sm-min: 768px;
@screen-sm-max: 991px;
@screen-md-min: 992px;
@screen-md-max: 1199px;
@screen-lg-min: 1200px;
//xs only
@media(max-width: @screen-xs-max) {
}
//small and up
@media(min-width: @screen-sm-min) {
}
//sm only
@media(min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
}
//md and up
@media(min-width: @screen-md-min) {
}
//md only
@media(min-width: @screen-md-min) and (max-width: @screen-md-max) {
}
//lg and up
@media(min-width: @screen-lg-min) {
}
