Well that was easy!
In the “Form” box on WP, I just wrapped the code in a <div> tag and gave that a class.
Defined the class in my main style sheet.
Works just like as if it were simple HTML/CSS.
Great!
Form:
<div class=”quickContact”>
<p>Your Name (required)
[text* your-name] </p>
<p>Your Email (required)
[email* your-email] </p>
<p>Subject
[text your-subject] </p>
<p>Your Message
[textarea your-message] </p>
<p>[submit “Send”]</p>
</div>
In CSS:
.quickContact input {
width: 100px;
}