Mobile version font size

Hi,

I am having problems to make text responsive. I have tried different CSS codes but they doesn´t work with valkimi theme.

@media only screen and (max-device-width: 480px) {
p
{
font-size:12px;
}
}

I have tried pasting on customizer CSS, style.css and even on style.min.css.

But it doesn´t make any change.

Could you give me any clue about how to solve this?

Thanks in advance.

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