How I show text in MYSQL on php

I have a counter with 3 boxes and I need it at 768px be vertical aligned not horizontally.

            <div class="timer" id="timer" data-animated="FadeIn">
            <div id="months" class="timer_box"></div>
            <div id="minutes" class="timer_box"></div>
            <div id="seconds" class="timer_box"></div>
            </div>