h1{
    text-align: center;
    background-color:gray;
    color:white;
    font-size:50px;
    margin:16px;
}

.articulo{
    text-align: center;
    border: 1px solid black;
    background-color:lightgray;
    margin:30px 10px 10px 10px;

}

.subtitulo{
    font-weight:bold;
    text-align:center;
    font-size: 20px;
    text-decoration:underline;
}