On line 1235 of the style.css file, change to the following

.contact textarea {
background-color: #fff;
background-image: none;
border: 1px solid #ccc;
border-radius: 4px;
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.075) inset;
height: 130px;
padding: 10px;
}