Here in the p7PM3-16R stylesheet, you've changed from the default 'and (max-width: 700px)' to 'and (max-width: 680px)' .....
/*END BREADCRUMB RULES*/
@media only screen and (min-width: 0px) and (max-width: 680px) {
If you change it back to it's default, then you'll be good, if you definitely need/want the 680px max-width, then leave the css as it is, then, you'll need to go into the p7PM3scriptsR.js and edit this bit (around line 40)....
sh+='@media only screen and (min-width: 0px) and (max-width: 700px) {\n';
to...
sh+='@media only screen and (min-width: 0px) and (max-width: 680px) {\n';
HTH