body {
  background-color: black;
  color: #fff;
  font-family: "Zen Dots", sans-serif;
  margin: 0;
}
header {
  background-color: #3d3d3d;
  text-align: center;
  padding: 20px;
  border-bottom: 2px solid red;
}
h1 {
  margin: 0;
  color: red;
  text-transform: uppercase;
}
nav 
{
  margin-top: 20px;
}
ol{
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
}
a {
  color: white;
  text-decoration: none;
  margin: 10px;
  font-weight: bold;
}
a:hover {
  color: red;
}
#inicio {
  text-align: center;
  padding: 40px 20px;
}
.presentacion {
  display: flex;
  justify-content: center; 
}
.presentacion img {
  width: 45%;
  max-width: 500px;
  border-radius: 10px;
  margin: 0 10px; 
}
footer {
  background-color: #2c2c2c;
  text-align: center;
  padding: 15px;
  font-size: 0.9em;
  color: white;
  margin-top: 40px;
}
.paginas-interes a{
  color: white;
  text-decoration: none;
  margin: 10px;
  font-weight: bold;
}