body {
    height: 1000px;
  }
  
  h4 {
    border: 1px solid black;
  
    position: absolute;
    /* bottom: 15px; */
  }
  
  .test {
    border: 10px solid red;
    /* width: 100px; */
    height: 100px;
    display: inline-block;
    box-sizing: border-box;
  
    position: sticky;
    top: 20px;
    right: 20px;
    min-width: 100px;
    max-width: 300px;
  }