body{
    background-color:#111;
    color:#f5f5f5;
    font-family:Arial, sans-serif;
    margin:0;
    padding:0;
}

.contenedor{
    width:80%;
    max-width:1000px;
    margin:30px auto;
}

header{
    text-align:center;
    background-color:#1c1c1c;
    padding:25px;
    border-radius:10px;
    border-left:5px solid #00aa44;
}

h1{
    color:#00cc66;
    margin-bottom:10px;
}

h2{
    color:#00cc66;
}

h3{
    color:#cccccc;
}

section{
    background-color:#1c1c1c;
    margin-top:20px;
    padding:20px;
    border-radius:10px;
}

p{
    line-height:1.6;
}

ul{
    padding-left:20px;
}

li{
    margin-bottom:10px;
}

a{
    color:#4db8ff;
    text-decoration:none;
}

a:hover{
    text-decoration:underline;
}

footer{
    text-align:center;
    margin-top:25px;
    padding:15px;
    color:#aaaaaa;
}