/* Make name and email inputs wider and taller */
input[name="name"],
input[name="email"] {
  width: 100%;      /* full width of the container */
  max-width: 400px; /* optional max width */
  padding: 0.5em;   /* some padding for better usability */
  font-size: 1em;
  box-sizing: border-box;
}

/* Make the message textarea much bigger */
textarea[name="message"] {
  width: 100%;
  max-width: 600px;
  height: 250px;
  padding: 0.5em;
  font-size: 1em;
  box-sizing: border-box;
  resize: vertical;  /* allow vertical resize only */
}