Rated 5 out of 5 stars

instead of providing font size changing option as commented , just provide it in dropdown or radio button

CSS to increase font size and width

/* Example: increase the title size */
.article-content {
font-size: 24px;
}
.article-container
{
max-width:120%;
background-color:white;
}

This review is for a previous version of the add-on (1.2.5).  This user has a previous review of this add-on.