.center {
  text-align: center;
  margin-left: auto;
  display: block;
  margin-right: auto;
}
h1 {
  text-decoration: underline;
}
p {
  text-align: center;
  margin-left: auto;
  display: block;
  margin-right: auto;
}
#article {
  text-align: center;
  margin-left: auto;
  display: block;
  margin-right: auto;
  outline: solid ;
    width: 40%;
}
img {
    text-align: center;
  margin-left: auto;
  display: block;
  margin-right: auto;
  outline: solid 5px;
}
button {
  padding: 10px 60px;
}
d {
      text-align: center;
  margin-left: auto;
  display: block;
  margin-right: auto;
}