*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family: Arial, Helvetica, sans-serif;
    background:#f4f6f8;
    color:#333;
    line-height:1.8;
}

.contenedor-aviso{
    max-width:1000px;
    margin:50px auto;
    background:#fff;
    padding:50px;
    border-radius:12px;
    box-shadow:0 5px 20px rgba(0,0,0,.08);
}

h1{
    text-align:center;
    margin-bottom:15px;
    color:#003366;
}

.actualizacion{
    text-align:center;
    color:#777;
    margin-bottom:40px;
}

section{
    margin-bottom:40px;
}

h2{
    color:#003366;
    margin-bottom:15px;
    padding-bottom:10px;
    border-bottom:2px solid #e5e5e5;
}

h3{
    margin-top:20px;
    margin-bottom:10px;
    color:#004c99;
}

p{
    margin-bottom:15px;
}

ul{
    margin-left:25px;
    margin-bottom:15px;
}

li{
    margin-bottom:8px;
}

.nota{
    background:#eef6ff;
    border-left:5px solid #0056b3;
    padding:15px;
    margin-top:20px;
    border-radius:6px;
}

@media(max-width:768px){

    .contenedor-aviso{
        margin:20px;
        padding:25px;
    }

    h1{
        font-size:28px;
    }

    h2{
        font-size:22px;
    }
}