Vertical Alignment of Text

How can I get the text in the green box to align in the middle of the box? My vertical-align: middle doesn’t do it.

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .container {
      width: 600px;
      height: 800px;
      border: 4px solid black;
      display: flex;
      flex-direction: row;
      justify-content: flex-start;
      align-items: flex-start;
      text-align: center;
    }

    .orange {
      height: 80px;
      width: 80px;
      background: orange;
      
    }

    .green {
      height: 110px;
      width: 110px;
      background: green;
      color: white;
      vertical-align: middle
    }

    .red {
      height: 140px;
      width: 140px;
      background: red;
      
      color:rgb(253, 249, 1)
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="orange">orange</div>
    <div class="green">green</div>
    <div class="red">red</div>
  </div>
</body>

</html>

Flex-box is good for alignment, make the green box a flex container then justify content and align items:

.green {
      height: 110px;
      width: 110px;
      background: green;
      color: white;
      display: flex;
      justify-content:center;
      align-items: center;
}

Thanks for that most useful tip. I didn’t know that once the container was made a flex, that you could do the same to the elements in the container. Obviously you can because it does work!