#pagina {
    max-width: 1000px;
    background-color: #184242;
    padding: 10px 10px 50px;
    margin: auto;
    border-radius: 3px;
}

header {
    max-width: 980px;
    height: 55px;
    background-color: #97bfbf;
    background-repeat: no-repeat;
    padding: 12px 10px 50px;
    text-align: center;
    font-family: sans-serif;
    font-size: 17px;
    color: rgb(0,0,0);
    margin: auto;
    border-radius: 3px;
}

body {
    max-width: 980px;
    background-color: #E8EEF0;
    background-repeat: no-repeat;
    padding: 8px 10px 50px;
    text-align: center;
    font-family: sans-serif;
    font-size: 17px;
    color: rgb(0,0,0);
    margin: auto;
}

#propuesta1 {
    background-color: #97bfbf;
    background-repeat: no-repeat;
    padding: 14px 0px 0px 0px;
    text-align: center;
    font-family: sans-serif;
    font-size: 14px;
    color: rgb(0,0,0);
    margin-top: 10px;
    margin-bottom: 10px;
    border-radius: 3px;
}

#propuesta2 {
    background-color: #97bfbf;
    background-repeat: no-repeat;
    padding: 14px 0px 0px 0px;
    text-align: center;
    font-family: sans-serif;
    font-size: 14px;
    color: rgb(0,0,0);
    margin-top: 20px;
    margin-bottom: 10px;
    border-radius: 3px;
}

#propuesta3 {
    background-color: #97bfbf;
    background-repeat: no-repeat;
    padding: 14px 0px 0px 0px;
    text-align: center;
    font-family: sans-serif;
    font-size: 14px;
    color: rgb(0,0,0);
    margin-top: 20px;
    margin-bottom: 10px;
    border-radius: 3px;
}

footer {
    max-width: 960px;
    background-color: rgb(242, 242, 242);
    background-repeat: no-repeat;
    padding: 2px 10px 11px 10px;
    text-align: center;
    font-family: sans-serif;
    font-size: 10px;
    color: rgb(0,0,0);
    margin: auto;
    border-radius: 3px;
}

footer img {
    float: left;
}