h1 {
    text-align: center;
}

hr.solid {
  border-top: 1px solid #bbb;
}

img {
  border-radius: 10px;
  max-width: 100%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

h4 {
    text-align: center;
}

/* unvisited link */
a:link {
  color: green; text-decoration: none;
}

/* visited link */
a:visited {
  color: blueviolet; text-decoration: none;
}

/* mouse over link */
a:hover {
  color: blue; text-decoration: underline;
}

/* selected link */
a:active {
  color: red; text-decoration: underline;
}

p {
    text-align: center;
}