This is due to CSS styling applied to standard HTML form elements within your current WordPress theme.
See Styling Contact Form for a general explanation of styling CF7 forms using CSS.
There is a link at the bottom of the page to a comprehensive and detailed article on Styling Contact Form 7 Forms. The article shows people, with suitable HTML & CSS skills, how to change the appearance of their Contact Form 7 Forms to meet their particular requirements.
In your case the problem is in https://www.baxterbell.com/wp-content/themes/clean-retina-child/style.css
input[type="text"], input[type="password"], textarea {
border: 1px solid #CCCCCC;
line-height: 5px; /* causing the problem */
margin: 0 0 5px;
padding: 3px;
width: 200px;
}
????
Change this to ?
input[type="text"], input[type="password"], textarea {
border: 1px solid #CCCCCC;
/* line-height: 5px; */
margin: 0 0 5px;
padding: 3px;
width: 200px;
}