Iterate through the DOM to search element wider than a certain width.

larger_than.js

// Iterate through the DOM to search element wider than a certain width.
// Practical for issues with invisible blocks creating layout issues 
// on mobile.
// set here the maxwidth of your choice.
var maxwidth = 414;
var startElem = document.getElementsByTagName('body')[0];
var items = startElem.getElementsByTagName("*");
for (var i = items.length; i--;) {
    if (items[i].getBoundingClientRect()['width'] > maxwidth) {
        console.log(items[i], items[i].getBoundingClientRect()['width'])
    }
}