我一直在做一些关于媒体查询的研究，但我仍然不太明白如何针对特定尺寸的设备。
我希望能够瞄准台式机、平板电脑和手机。我知道会有一些差异，但如果有一个通用的系统可以用来针对这些设备就好了。
我找到了一些例子:
# Mobile
only screen and (min-width: 480px)
# Tablet
only screen and (min-width: 768px)
# Desktop
only screen and (min-width: 992px)
# Huge
only screen and (min-width: 1280px)
Or:
# Phone
only screen and (max-width:320px)
# Tablet
only screen and (min-width:321px) and (max-width:768px)
# Desktop
only screen and (min-width:769px)
每个设备的断点应该是什么?
当前回答
I have used this site to find the resolution and developed CSS per actual numbers. My numbers vary quite a bit from the above answers, except that the my CSS actually hits the desired devices. Also, have this debugging piece of code right after your media query e.g: @media only screen and (min-width: 769px) and (max-width: 1281px) { /* for 10 inches tablet screens */ body::before { content: "tablet to some desktop media query (769 > 1281) fired"; font-weight: bold; display: block; text-align: center; background: rgba(255, 255, 0, 0.9); /* Semi-transparent yellow */ position: absolute; top: 0; left: 0; right: 0; z-index: 99; } } Add this debugging item in every single media query and you will see what query has being applied.
其他回答
如果你想瞄准一个设备，那么只需要写min-device-width。例如:
为iPhone
@media only screen and (min-device-width: 480px){}
为平板电脑
@media only screen and (min-device-width: 768px){}
这里有一些不错的文章:
如何使你的网站适合苹果iPad CSS3媒体查询
该行为在桌面上不会改变。但在平板电脑和手机上，我将导航栏展开以覆盖大的logo图像。注意:使用边缘(顶部和底部)尽可能多的你需要你的标志高度。
对于我的例子，60px的顶部和底部工作完美!
@media (max-width:768px) {
.navbar-toggle {
margin: 60px 0;
}
}
检查这里的导航栏。
这不仅仅是关于分辨率，你还需要找到设备的DPR: whatismyscreenresolution “设备像素比(DPR)是设备制造商提供的一个数字，用于HiDPI(每英寸高点数)或Retina(苹果的商标)显示器。”
媒体查询示例:(最小分辨率:3.0dppx)
$xs : "extra-small";
$s : "small";
$m : "medium";
$l : "large";
$xl : "extra-large";
@mixin respond($breakpoint) {
@if($breakpoint == $xs) {
@media only screen and (min-width: 320px) and (max-width: 479px) { @content; }
}
@if($breakpoint == $s) {
@media only screen and (min-width: 480px) and (max-width: 767px) { @content; }
}
@if($breakpoint == $m) {
@media only screen and (min-width: 768px) and (max-width: 991px) { @content; }
}
@if($breakpoint == $l) {
@media only screen and (min-width: 992px) and (max-width: 1199px) { @content; }
}
@if($breakpoint == $xl) {
@media only screen and (min-width: 1200px) { @content; }
}
}
你也可以为小于320px的场景添加一个，比如Galaxy fold
如果你想创建更具体的媒体查询，这里有一个IPhone的例子，从这个链接https://css-tricks.com/snippets/css/media-queries-for-standard-devices/复制，你可以在这个链接中找到更多设备的媒体查询)
/* ----------- iPhone 4 and 4S ----------- */ /* Portrait and Landscape */ @media only screen and (min-device-width: 320px) and (max-device-width: 480px) and (-webkit-min-device-pixel-ratio: 2) { } /* Portrait */ @media only screen and (min-device-width: 320px) and (max-device-width: 480px) and (-webkit-min-device-pixel-ratio: 2) and (orientation: portrait) { } /* Landscape */ @media only screen and (min-device-width: 320px) and (max-device-width: 480px) and (-webkit-min-device-pixel-ratio: 2) and (orientation: landscape) { } /* ----------- iPhone 5, 5S, 5C and 5SE ----------- */ /* Portrait and Landscape */ @media only screen and (min-device-width: 320px) and (max-device-width: 568px) and (-webkit-min-device-pixel-ratio: 2) { } /* Portrait */ @media only screen and (min-device-width: 320px) and (max-device-width: 568px) and (-webkit-min-device-pixel-ratio: 2) and (orientation: portrait) { } /* Landscape */ @media only screen and (min-device-width: 320px) and (max-device-width: 568px) and (-webkit-min-device-pixel-ratio: 2) and (orientation: landscape) { } /* ----------- iPhone 6, 6S, 7 and 8 ----------- */ /* Portrait and Landscape */ @media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (-webkit-min-device-pixel-ratio: 2) { } /* Portrait */ @media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (-webkit-min-device-pixel-ratio: 2) and (orientation: portrait) { } /* Landscape */ @media only screen and (min-device-width: 375px) and (max-device-width: 667px) and (-webkit-min-device-pixel-ratio: 2) and (orientation: landscape) { } /* ----------- iPhone 6+, 7+ and 8+ ----------- */ /* Portrait and Landscape */ @media only screen and (min-device-width: 414px) and (max-device-width: 736px) and (-webkit-min-device-pixel-ratio: 3) { } /* Portrait */ @media only screen and (min-device-width: 414px) and (max-device-width: 736px) and (-webkit-min-device-pixel-ratio: 3) and (orientation: portrait) { } /* Landscape */ @media only screen and (min-device-width: 414px) and (max-device-width: 736px) and (-webkit-min-device-pixel-ratio: 3) and (orientation: landscape) { } /* ----------- iPhone X ----------- */ /* Portrait and Landscape */ @media only screen and (min-device-width: 375px) and (max-device-width: 812px) and (-webkit-min-device-pixel-ratio: 3) { } /* Portrait */ @media only screen and (min-device-width: 375px) and (max-device-width: 812px) and (-webkit-min-device-pixel-ratio: 3) and (orientation: portrait) { } /* Landscape */ @media only screen and (min-device-width: 375px) and (max-device-width: 812px) and (-webkit-min-device-pixel-ratio: 3) and (orientation: landscape) { }
