colums1.html

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>my web page</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
    <style media="screen">
      .row > div {
      padding: 20px;
      background-color: teal;
      border: 2px solid black;
      }

    </style>
  </head>
  <body>
    <div class="row">
      <div class="col-lg-3 col-sm-6">
        thisi is a section
      </div>
      <div class="col-lg-3 col-sm-6">
        thisi is another section
      </div>
      <div class="col-lg-3 col-sm-6">
        thisi is a third section
      </div>
      <div class="col-lg-3 col-sm-6">
        thisiis a fourth section
      </div>
    </div>
  </body>
</html>