  <style type="text/css" media="all">
    /* Set background color for invalid inputs: */
    input:focus:invalid {
      background-color: rgba(225,0,0,0.05);
    }
    .horizontal.centered {
      margin-top: 20px;
      display: -webkit-box;
      display: -webkit-flex;
      display: flex;
      -webkit-box-orientation: horizontal;
      -webkit-flex-direction: row;
      -ms-flex-direction: row;
      flex-direction: row;
      -wekbit-box-pack: center;
      -wekbit-justify-content: center;
      -ms-j