* {
    margin: 0;
    padding: 0;
    font-family:'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande'  ;
}

body {
    background-color: #f4f6f9;
    color: #333;
    line-height: 1.6;
}
/*header*/
header {
    background:#1e3c72;
    color: white;
    text-align: center;
    padding: 30px 10px;
}

header h1 {
    font-size: 40px;
    margin-bottom: 10px;
    
}

header h2 {
    font-size: 22px;
    font-weight: normal;
}

nav {
    background-color: #2a5298;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;

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

nav ul>li {
    margin: 10px 20px;
}

nav ul li a {
    text-decoration: none;
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
}

section {
    background: white;
    margin: 30px auto;
    padding: 25px;
    width: 90%;
    max-width: 900px;
    border-radius: 12px;
}

section h2 {
    margin-bottom: 15px;
    font-family:'Courier New', Courier, monospace;
    border-bottom: 3px solid cornflowerblue;
    font-weight: bold;
}

.submenu {
    list-style: none;
}

.submenu li {
    display: block;
    margin: 10px 0;
}

.submenu li a.button {
    display: block;
    background-color: #e8e8e8;
    color: #333;
    padding: 15px;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s, transform 0.2s;
    min-width: 150px;
    cursor: pointer;
}

.submenu li a.button .titulo {
    display: block;
    font-weight: bold;
    font-size: 16px;
    margin-bottom: 8px;
}

.submenu li a.button .descripcion {
    display: block;
    font-size: 14px;
    line-height: 1.4;
}

.submenu li a.button:hover {
    background-color: #d0d0d0;
    transform: translateY(-2px);
}
a:hover {
  color: aquamarine;
}
footer {
    background-color: #1e3c72;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
}