style changes don’t apply to dropdown menu

Hey!!

in order to build a form with two columns I added some CSS. For text fields and the date picker everything worked well. Unfortunately, the dropdown menus aren’t reacting to the changes. I tried select or menu as form tags, but it didn’t change. Is the “select” tag the right one?

Here is my Website: http://kelsterbar.com/start

Here is my CSS:

.wpcf7 input[type=”text”], .wpcf7 input[type=”email”], .wpcf7 input[type=”select”], .wpcf7 input[type=”date”], .wpcf7 textarea {
width: 100%;
padding: 8px;
border: 5px solid #ccc;
border-radius: 1px;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box
}

Thanks for your help!!