body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  background-color: #ffffff;
  border-bottom: 4px solid #004182; 
}

header img {
  height: 60px;
}

main {
  padding: 20px;
  border: 6px solid #004182; 
  margin: 20px;
  background-color: #ffffff;
}

h1{color: #004080;
  text-align: center;
}

h1, h2, h3 {
  color: #004080;
}

.cta {
  background-color: #e6f0ff;
  border: 2px solid #80c0ff;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 8px;
}
.banner{
  width: 400px;
  display: block;
  margin-left: auto;
  margin-right: auto;


}

.seccion {
  border: 2px solid #d56469;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 8px;
}

ul {
  list-style-type: none;
  padding-left: 0;
}

li {
  margin: 8px 0;
}

a {
  color: #dadada;
  text-decoration: none;
  font-weight: bold;
}
.youtube{
  margin: auto;
  text-align:center;
  border: 6px solid #004182; 
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 8px;
}
a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  padding: 20px;
  background-color: #004080;
  color: white;
}