I created a new page where I put this code
<div class=”container”>
<div class=”one-third”> some text </ div>
<div class=”one-third”> some text </ div>
<div class=”one-third”> some text </ div>
and I assumed that these columns is adjusted in the reduced page into a single column as well as in the footer. But the columns are smaller at the expense of the text, which are next to each other and the two of them next to the first A reduction in the mobile will be aligned under each other all. Footer jumps from adjacent aligned directly under him.
Sorry for poor English.