.center {
  text-align: center;
}

.center table {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

body {
  font-family: arial, serif;
  background: #f0f0f0;
  color: #000000;
}

a:link {
  color: #0a0a0a;
  background: transparent;
  text-decoration: none;
}
 
a:visited {
  color: #0a0a0a;
  background: transparent;
  text-decoration: none;
}

a:hover {
  color: #0a0a0a;
  background: #d0d0d0;
}