Child theme style partially loaded

Hi.

I’m creating a new Page, so i created a child theme with its style.css

So, in that style, i have some rules to a contact form with class selector, but some rules aren’t loaded.
For example: to input field i Have this:

.input-field{
border: 1px solid #CCC;
font-size: 16px;
border-radius: 0;
height: 3em;
width: 27%;
-webkit-appearance: none;
}

When i inspect element, just the font-size and height are loaded.
What i am missin?