<form id="sundae-order-form">
  <h2>Online Sundae Order Form</h2>
  <fieldset>
    <legend>Customer Info</legend>
    <p><label>Name (required): <input type=name required aria-describedby="name-validation"><br>
        <span id="name-validation" class="validation-message">Please provide your full name</span></label></p>
    <p><label>Telephone (required): <input type=tel required aria-describedby="tel-validation"><br>
        <span id="tel-validation" class="validation-message">Please provide an area code and use the format XXX-XXX-XXXX</span></label></p>
    <p><label>Email address (required): <input type=email required aria-describedby="email-validation"><br>
        <span id="email-validation" class="validation-message">Please provide a valid email address using the format [email protected]</span></label></p>
  </fieldset>

  <fieldset>
    <legend>Size</legend>
    <p><label><input type=radio name=size value="small">Small</label></p>
    <p><label><input type=radio name=size value="medium">Medium</label></p>
    <p><label><input type=radio name=size value="large">Large</label></p>
  </fieldset>

  <fieldset>
    <legend>Toppings</legend>
    <p><label><input type=checkbox name=topping value="whipped-cream">Whipped cream</label></p>
    <p><label><input type=checkbox name=topping value="cherry">Cherry</label></p>
    <p><label><input type=checkbox name=topping value="nuts">Nuts</label></p>
    <p><label><input type=checkbox name=topping value="caramel-sauce">Caramel sauce</label></p>
    <p><label><input type=checkbox name=topping value="chocolate-sauce">Chocolate sauce</label></p>
  </fieldset>
  <p><label>Delivery instructions: </label><br><textarea name="comments"></textarea></p>
  <p><button>Submit order</button></p>
</form>

@import url(https://fonts.googleapis.com/css?family=Open+Sans);

body {
  margin: 0 1rem;
  font-family: "Open Sans", sans-serif;
}

form {
  max-width: 700px;
  margin: 0 auto;
}

input {
  margin: 0.5rem;
}

textarea {
  margin-top: 0.5rem;
  min-width: 100%;
  min-height: 5rem;
}

fieldset {
  margin: 1.5rem 0;
}

legend {
  font-size: 1.25rem;
  font-weight: 900;
}

.validation-message {
  font-size: 0.75rem;
}