Answer to question http://www.question2answer.org/qa/37144/how-change-recent-questions-and-answers-text-css-class

qa-theme-base.php

function page_title_error()
{
	$favorite=@$this->content['favorite'];

	if (isset($favorite))
		$this->output('<form '.$favorite['form_tags'].'>');

	echo 'Template: ' . $this->template . ' ';
	switch ($this->template) {
		case 'qa':
			$class = ' class="recent-questions"';
			break;
		case 'some-other-template-you-want':
			$class = ' class="another-class-to-apply-css"';
			break;
		default:
			$class = '';
	}

	$tag = 'h1';
	$this->output('<' . $tag . $class . '>');
	$this->favorite();
	$this->title();
	$this->output('</' . $tag . '>');

	if (isset($this->content['error']))
		$this->error(@$this->content['error']);

	if (isset($favorite)) {
		$this->form_hidden_elements(@$favorite['form_hidden']);
		$this->output('</form>');
	}
}