CSS code to exclude a few input fields

Site URL: http://www.catchavibeuk.com/landing-page

Hello!

I am currently trying to edit the size of a form I created on my landing page. I have put a piece of code to edit the width and height of the form blocks but I would like the tickbox to not be affected by this. At the moment the tickbox is above the description text but I want them to be aligned. The current code is as follows:

form {
 width: 300px;
 height: 400px;
 margin: auto;
 position: relative;
}
/* Form fields space */
.form-wrapper .field-list .field {
    margin-bottom: 3px;
}
input {
 width: 15px;
 height: 55px;
 }

How can I exempt the tick box?

Greg