Hello Tom,

The portfolio container width is calculated dynamically in /js/scripts.js in MasonryPortfolio() function and it's depending of current screen width.

for example:

$('#portfolio-wrap').css( {width : $('#portfolio-wrap').parent().width() - 400 + 'px'});
$('#portfolio-wrap.packery-mode').css( {width : $('#portfolio-wrap').parent().width() - 380 + 'px'});
var portfolioWidth = $('#portfolio-wrap').width();