body {
    background: linear-gradient(#ddffdd, #dddddd);
    font-size: x-large;
}

html {
    font-style: Arial; 
}

.red {
    color: #FF0000;
}

.blue {
    color: #0000FF;
}

header {
    font-size: xx-large;
    font-weight: bold;
    text-align: center;
    margin-left: auto; 
    margin-right: auto;
    background: linear-gradient(#cccccc, #dddd00);
}

.tabla {
    
    text-align: left; 
    margin-left: auto; 
    margin-right: auto;
}

.download {
    font-size: large;
    text-align: center;
    margin-left: 100px;
}

.bordes {
    border-width: thick;
    border-color: aqua;
    border-style: inset solid;
}