.ex-wpcf7 input, 
.ex-wpcf7 select {
    font-size: 15px;
    padding: 15px 22px;
    width: 100%;
    display: block;
}

.ex-wpcf7 textarea {
    font-size: 15px;
    padding: 18px 22px;
    height: 120px;
    width: 100%;
}

.ex-wpcf7 input[type="button"], 
.ex-wpcf7 input[type="submit"], 
input[type="reset"] {
    width: auto;
}