Text does not wrap in Mystique Version: 2.6-wpcom

I am able to resize the font of the page with the mouse wheel, but it does not wrap. It just runs off the edge of the browser so that it cannot be viewed.

Most questions I’ve encountered in forums about text wrapping in WordPress themes have to do with (1) text wrapping when words are very long or (2) the behavior of text wrapping around an image. **Neither** of these issues is my problem. My text does not wrap *at* *all*. Period.

Under the Appearance section in the sidebar I can select the option “Editor” and Mystique displays a lot of CSS code. But I have no idea how to modify that code to enable text wrapping. When I search for “wrap” in the CSS, I find the following definitions. I’m afraid to modify any of them without first seeking the advice of someone who understands the code:

.post-wrapper,
.error-page {
margin: 1em 0;
padding-bottom: 1.2em;
}
.post-wrapper {
background: url(“images/post-separator.gif”) repeat-x left bottom;
}
.single .post-wrapper {
margin: 0;
}

/* Asides and Quotes */
.format-aside .aside-wrap {
background: #f4f4f4;
border: 1px solid #e1e1e1;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
overflow: hidden;
padding: 20px;

#comments {
word-wrap: break-word;
}

I often make fonts large because of eyesight problems, but then I lose a lot of the text. How do I enable text wrapping?

Thanks