.section-build-your-first-app .image-xcode-and-back {
    background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_large.png)
}

@media (-webkit-min-device-pixel-ratio:1.5),(min-resolution:144dpi),only screen and (-webkit-min-device-pixel-ratio:1.5),only screen and (min-resolution:1.5dppx) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_large_2x.png)
    }
}

@media only screen and (max-width:1068px) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_medium.png)
    }
}

@media only screen and (max-width:1068px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:1068px)and (min-resolution:1.5dppx),only screen and (max-width:1068px)and (min-resolution:144dpi) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_medium_2x.png)
    }
}

@media only screen and (max-width:734px) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_small.png)
    }
}

@media only screen and (max-width:734px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:734px)and (min-resolution:1.5dppx),only screen and (max-width:734px)and (min-resolution:144dpi) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_small_2x.png)
    }
}

@media only screen and (max-width:366px) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_large.png)
    }
}

@media only screen and (max-width:366px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:366px)and (min-resolution:1.5dppx),only screen and (max-width:366px)and (min-resolution:144dpi) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_large_2x.png)
    }
}

@media only screen and (max-width:366px)and (max-width:1068px) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_medium.png)
    }
}

@media only screen and (max-width:366px)and (max-width:1068px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:366px)and (max-width:1068px)and (min-resolution:1.5dppx),only screen and (max-width:366px)and (max-width:1068px)and (min-resolution:144dpi) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_medium_2x.png)
    }
}

@media only screen and (max-width:366px)and (max-width:734px) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_small.png)
    }
}

@media only screen and (max-width:366px)and (max-width:734px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:366px)and (max-width:734px)and (min-resolution:1.5dppx),only screen and (max-width:366px)and (max-width:734px)and (min-resolution:144dpi) {
    .section-build-your-first-app .image-xcode-and-back {
        background-image: url(/th/swift/playgrounds/images/overview/xcode-lockup__sd3dx3kts362_small_2x.png)
    }
}


.section-real-swift-code .image-starting-points {
    background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_large.png)
}

@media (-webkit-min-device-pixel-ratio:1.5),(min-resolution:144dpi),only screen and (-webkit-min-device-pixel-ratio:1.5),only screen and (min-resolution:1.5dppx) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_large_2x.png)
    }
}

@media only screen and (max-width:1068px) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_medium.png)
    }
}

@media only screen and (max-width:1068px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:1068px)and (min-resolution:1.5dppx),only screen and (max-width:1068px)and (min-resolution:144dpi) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_medium_2x.png)
    }
}

@media only screen and (max-width:734px) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_small.png)
    }
}

@media only screen and (max-width:734px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:734px)and (min-resolution:1.5dppx),only screen and (max-width:734px)and (min-resolution:144dpi) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_small_2x.png)
    }
}

@media only screen and (max-width:385px) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_large.png)
    }
}

@media only screen and (max-width:385px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:385px)and (min-resolution:1.5dppx),only screen and (max-width:385px)and (min-resolution:144dpi) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_large_2x.png)
    }
}

@media only screen and (max-width:385px)and (max-width:1068px) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_medium.png)
    }
}

@media only screen and (max-width:385px)and (max-width:1068px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:385px)and (max-width:1068px)and (min-resolution:1.5dppx),only screen and (max-width:385px)and (max-width:1068px)and (min-resolution:144dpi) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_medium_2x.png)
    }
}

@media only screen and (max-width:385px)and (max-width:734px) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_small.png)
    }
}

@media only screen and (max-width:385px)and (max-width:734px)and (-webkit-min-device-pixel-ratio:1.5),only screen and (max-width:385px)and (max-width:734px)and (min-resolution:1.5dppx),only screen and (max-width:385px)and (max-width:734px)and (min-resolution:144dpi) {
    .section-real-swift-code .image-starting-points {
        background-image: url(/th/swift/playgrounds/images/overview/creativity_imac__fljsja9he8mm_small_2x.png)
    }
}