CSS script to improve WPCF7 styling

Contact form 7 is so great but its style is so basic.

Here are a few CSS line to improve its appearence in 3 clicks:

.wpcf7 input[type=submit] {
     background: #b90c04;
     border: navajowhite;
     padding: 10px 20px;
     color: #fff;
 }
 div.wpcf7 .ajax-loader {
     float: right;
 }
 .wpcf7 input[type=text], .wpcf7 input[type=email], .wpcf7 textarea {
     width: 100%;
     padding: 5px;
     margin-top: 4px;
 }
 .wpcf7 label {
     width: 100%;
 }