T(-) countdown will not format on iphone

It looks like you have created your own ‘fortuna’ css style for the timer. The issue you are experiencing is because you have defined how you want the timer to look at smaller screen-sizes with this CSS:

@media only screen and (max-width: 480px) {
	.fortuna-dash {
		display: block;
	}
}

the display: block is causing your dash elements to stretch like this.
Here is also where you would control how all the elements will display with CSS, such as the font-size.