body{
    background: #3ea1ff url(../images/fondo.png)  repeat;
    color: white;
}

header{
    background-color: white;
    color: black;
    opacity: 0.7;
    text-align: center;
    border-radius: 20px;
    padding: 30px;
    margin: 20px;
}

header h1{
    font-variant: small-caps;
}

#etsiit{
    border: 1px solid white;
    border-radius: 20px;
    display: block;
    margin: 0 auto;
}
#contenido {
    margin: 40px 50px;
    padding-bottom: 1em
}

#contenido h2{
    color: silver;
    text-transform: uppercase;
}

#contenido p{
    font-size: 110%;
    line-height: 130%;
    text-align: justify;
}

#contenido a{
    color: white;
    text-decoration: none;
    border-bottom: 1px dotted white;
}

#contenido a:hover{
    color: silver;
    border-bottom: 1px dotted silver;
}

#contenido ol{
    list-style-type: upper-roman;
    margin-top: 30px;
}

#contenido ol li{
    margin-bottom: 15px;
}

#contenido table{
    width: 300px;
    padding: 15px;
    border: 1px solid silver;
    border-radius: 15px;
    text-align: center;
}

#contenido table th{
    background-color: white;
    color: #3EA1FF;
    padding: 5px 15px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

#contenido table td{
    border: 1px solid silver;
    padding: 5px 15px;
}

footer{
    position: fixed;
    bottom: 0px;
    left: 0px;
    background-color: black;
    width: 100%;
    height: 3em;
}

footer p{
    text-align: center;
    font-size: 90%;
}