<html lang="en">
  <head>
    <meta charset="utf-8"/>
    <title>Advanced styling: Task 3</title>

  </head>

  <body>
    <form>
      <fieldset>
        <legend>Feedback form</legend>

        <p>Required fields are labelled with "required".</p>
        <div>
          <label for="fname">First name: </label>
          <input id="fname" name="fname" type="text" required placeholder="Tom" minlength="2">
          <span></span>
        </div>
        <div>
          <label for="lname">Last name: </label>
          <input id="lname" name="lname" type="text" required placeholder="Smith" minlength="2">
          <span></span>
        </div>
        <div>
          <label for="email">Email address: </label>
          <input id="email" name="email" type="email" placeholder=" ">
          <span></span>
        </div>
        <div><button>Submit</button></div>
      </fieldset>
    </form>
  </body>

</html>

body {
  background-color: #fff;
  color: #333;
  font: 1em / 1.4 Helvetica Neue, Helvetica, Arial, sans-serif;
  padding: 1em;
  margin: 0;
}

* {
  box-sizing: border-box;
}

button,
input,
select {
  font-family: inherit;
  font-size: 100%;
  padding: 0; margin: 0;
}

fieldset {
  padding: 10px 30px 0;
  width: 400px;
}

legend {
  color: white;
  background: black;
  padding: 5px 10px;
}

fieldset > div {
  margin-bottom: 20px;
  display: flex;
  flex-flow: row wrap;
}

button, label, input {
  display: block;
  font-family: inherit;
  font-size: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  width: 100%;
  padding: 5px;
  height: 30px;
}

input {
  box-shadow: inset 1px 1px 3px #ccc;
  border-radius: 5px;
}

input:hover, input:focus {
  background-color: #eee;
}

button {
  width: 60%;
  margin: 0 auto;
}

/* My code from here */

input + span {
  position: relative;
}

input:required + span::after {
  position: absolute;
  font-size: 0.8rem;
  border: 2px solid orange;
  background-color: rgb(251, 198, 100);
  border-radius: 5px;
  color: black;
  content: "required";
  padding: 0.5px 5px;
  top: -27px;
  left: -62px;
}

input:invalid:not(:placeholder-shown)/*or :not(:blank) <- :blank is not supported by any browser yet*/ {
  border: 2px solid red;
}

input:invalid:not(:placeholder-shown) + span::before {
  position: absolute;
  content: "✕";
  color: red;
  font-size: 0.8rem;
  top: -22px;
  left: -215px;
}

input:valid:not(:placeholder-shown) + span::before {
  position: absolute;
  content: "✓";
  color: green;
  font-size: 0.8rem;
  top: -22px;
  left: -215px;
}
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