html {
  scroll-behavior: smooth; /* desplazamiento suave */
}

body {
  font-family: 'Roboto', Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
  line-height: 1.6;
}

header, section, footer {
  padding: 40px;
  max-width: 1000px;
  margin: auto;
}

header {
  background: #feffff;
  color: white;
  text-align: center;
  padding-top: 80px;
}

h1, h2 {
  font-family: 'Roboto', sans-serif;
  font-weight: 700;
  color: #2c3e50;
}

.block {
  background: white;
  margin: 20px 0;
  padding: 30px;
  border-radius: 8px;
}

ul {
  margin-left: 20px;
}

footer {
  background: #2c3e50;
  color: white;
  text-align: center;
}

a {
  color: #3498db;
  text-decoration: none;
}

nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: #34495e;
  padding: 10px 0;
  z-index: 1000;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 0;
}

nav ul li {
  margin: 0 15px;
}

nav ul li a {
  color: white;
  font-weight: bold;
  text-decoration: none;
  transition: color 0.3s ease;
}

nav ul li a:hover {
  color: #f39c12;
}


img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: auto;
}