How can I "remove" or "hide" elements such as the "subscribe" form?

If I try to use display:none or <div hidden>, the entire page formatting is off.

I would also like to remove or delete other content without losing the format of the page.

I do not want the following in the "coming-soon-3.html" page:

				<div class="divider divider-center divider-short divider-margin"><i class="icon-time"></i></div>

				<div class="widget-subscribe-form-result"></div>
				<form id="widget-subscribe-form" action="include/subscribe.php" role="form" method="post" class="nobottommargin">
					<div class="input-group input-group-lg divcenter" style="max-width:600px;">
						<span class="input-group-addon"><i class="icon-email2"></i></span>
						<input type="email" name="widget-subscribe-form-email" class="form-control required email" placeholder="Enter your Email">
						<span class="input-group-btn">
							<button class="btn btn-default" type="submit">Subscribe Now</button>
						</span>
					</div>
				</form>

How can I remove or delete widgets from the pages I want to use?

For example, I like the coming soon pages, but I want to remove content such as the email and the newsletter "subscribe" form?