The mobile functionality of the stylesheet is not functioning properly

Recently, I came across an issue with a stylesheet designed for mobile devices that contains the following code:

/* Smartphones (portrait) ----------- */
@media only screen 
and (max-width : 320px) {
/* Styles */
}

Surprisingly, this code failed to work on my iPhone 3GS. Strangely enough, it worked perfectly fine when I resized the browser window.

Curiously, by changing the value of "max-width" to a larger number like 1000px, the stylesheet worked as intended. Why is this happening?

Answer №1

Be sure to add the viewport meta tag to your HTML.

<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">

Many mobile browsers display web content as if it were a standard webpage with a width of 980px, then resize it to fit the actual size of the browser's viewport.

That's why media queries set at 320px may not work properly, while those set at 1000px could function correctly.

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