.main{
  margin: auto 20%;
}
a{
  color: black;
  text-decoration: none;
}
h2{
  margin-bottom: 0;
}
p{
  margin-top: 0;
}

@media all and (max-width: 800px) {
  .main{
    margin: auto;
    padding: 15px;
  }
}