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<meta name="viewport" content="width=device-width, initial-scale=1.0" />

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<! yt gjdnjhzqnt 'njuj yf cdjtv cfqnt >

<style>

@media (min-width:376px) {

.mobile_image {

display: none;

}

.desktop_image {

display: inline;

}

}

@media (max-width:375px) {

.mobile_image {

display: inline;

}

.desktop_image {

display: none;

}

}

</style>

<img src="mobile.png" class="mobile_image" />

<img src="desktop.png" class="desktop_image" />

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<style>

@media (min-width:376px) {

.myimage {

background-image: url("desktop.png");

width: 700px;

height: 550px;

}

}

@media (max-width:375px) {

.myimage {

background-image: url("mobile.png");

width: 350px;

height: 130px;

}

}

</style>

<div class="myimage></div>

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