body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-image: url(../img/fondodise%C3%B1omadera.jpg);
    background-repeat: no-repeat;
    background-size: cover;
}

header {

    color: black;
    padding: em;
    text-align: center;
    font-size: 25px;
    text-shadow: 2px 4px 4px rgba(0, 0, 0, 0.4), 0px -1px 1px rgba(0, 0, 0, 0.6);
}


ul {
    list-style-type: none;
    text-align: right;
}

li {
    display: inline;
    font-size: 15px;
    margin-left: 15px
}

nav {
    background-color: black;
    padding: 0.45em;
    text-align: center;
}

nav a {
    color: white;
    font-weight: bold;
    font-size: 15px;
    text-decoration: none;
    padding: 1em 2em;
    margin: 0 0.2em;
    border-radius: 5px;
    background-color: black;

}

nav a:hover {
    background-color: gray;
}

nav img {
    float: left;
    margin-right: 10px;
    width: auto;
    height: 90px;

}


h4 {
     border-bottom: 2px solid black;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

h3 {
    color: black; 
    border-bottom: 2px solid black;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

#ex-primero {
    max-width: 800px;
    margin: 50px auto;
    background-color: azure;
    padding: 40px;
    border: 1px solid azure;
    border-radius: 30px;
    box-shadow: 0 0 20px rgba(51, 117, 255, 0.2)
    
}
#ex-primero img {
    
    max-width: 20%; 
    display: block;
    border: 1px solid black;
    border-radius: 5px;
    transition: opacity 0.3s ease; 
    
}


footer {
    width: 100%;
    height: 90px;
    background-color: black;
    color: white;
    bottom: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.50px;
    position: sticky;
    text-align: center;
}

.ex-info-contacto {
    margin-bottom: 0;
}

.ex-info-contacto ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ex-info-contacto li {
    background-color: black;
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.ex-info-contacto strong {
    font-weight: bold;
}

.ex-info-legal {
    margin-bottom: 0;
    background-color: black;
    
    
}

.ex-info-legal ul {
    list-style: none;
    padding: 0;
    margin: 0;
   
}

.ex-info-legal li {
    display: block;
    margin-bottom: 10px;
}

.ex-info-legal li a{
    text-decoration: none;
    color: white;
}

.ex-info-derechos-autor {
    font-size: 0.8rem;
}

.ex-info-accesibilidad {
    font-size: 0.6rem;
}