.moz-text-html .mj-column-per-100{
width:100% !important;
max-width:100%;
}

.moz-text-html .mj-column-px-650{
width:650px !important;
max-width:650px;
}

.moz-text-html .mj-column-px-338{
width:338px !important;
max-width:338px;
}

.moz-text-html .mj-column-px-312{
width:312px !important;
max-width:312px;
}