Responsive design 媒体查询帮助，这些是我使用的吗？

在当前RWD网站am building上，用于移动（iphone）/标签（ipad）/笔记本电脑屏幕（1366X768 px）的媒体查询如下：

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这些是我正在使用的吗？

是的，也包括这些，以获得完美的RWD

// Little larger screen
@media only screen and (min-width: 480px) {

}

// Pads and larger phones
@media only screen and (min-width: 600px) {

}

// Larger pads
@media only screen and (min-width: 768px) {

}

// Horizontal pads and laptops
@media only screen and (min-width: 992px) {

}

// Really large screens
@media only screen and (min-width: 1382px) {

}

// 2X size (iPhone 4 etc)
@media only screen and 
        (-webkit-min-device-pixel-ratio: 1.5), only screen and 
        (-o-min-device-pixel-ratio: 3/2), only screen and 
        (min-device-pixel-ratio: 1.5) {

} 如果您使用Sass，我一直在使用以下小技巧：

$laptop-size: "only screen and (min-width: 768px)";
$desktop-size: "only screen and (min-width: 1382px)";

//等 然后

---

是的，也包括这些，以获得完美的RWD

// Little larger screen
@media only screen and (min-width: 480px) {

}

// Pads and larger phones
@media only screen and (min-width: 600px) {

}

// Larger pads
@media only screen and (min-width: 768px) {

}

// Horizontal pads and laptops
@media only screen and (min-width: 992px) {

}

// Really large screens
@media only screen and (min-width: 1382px) {

}

// 2X size (iPhone 4 etc)
@media only screen and 
        (-webkit-min-device-pixel-ratio: 1.5), only screen and 
        (-o-min-device-pixel-ratio: 3/2), only screen and 
        (min-device-pixel-ratio: 1.5) {

} 如果您使用Sass，我一直在使用以下小技巧：

$laptop-size: "only screen and (min-width: 768px)";
$desktop-size: "only screen and (min-width: 1382px)";

//等 然后

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