.border {
  clear: both;
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  border: 0;
}

section {
    margin: 1.5em;
    color: black;
    font-size: 1.5em;
    text-align: center;
}

.title_color {
    color: black;
}
a {
    color: black;
}
a:hover {
    color: black;
    text-decoration: underline;
}