<style type="text/css">
  .section1{
    padding: 50px; 
    margin: auto; 
    max-width: 1000px; 
    border: px solid black;
    margin-top: 20px;
    margin-bottom: 50px;
    box-shadow: -1px 10px 20px 11px #a9a1a1;
  
    background: rgba(0, 0, 0, 0.1);
  }
  .section1 a{
    color: blue;
  }
  #section2 h5{
    color: cadetblue;
  }
  .abouth1{
    text-align: center;
    margin-top: 20px;
  }
</style>