Window Width :

.visible-xx-block (Break Point : 992px)

container width :

A .col-xs-12 .col-md-8

B .hidden-xs .hidden-sm . col-md-4

C .col-xs-12 .col-md-6

D .col-xs-12 .visible-xs-block .visible-sm-block

E .col-xs-12 .col-md-6