*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}

body{
    background:#0d47a1;
    color:white;
}

.container{
    width:95%;
    max-width:500px;
    margin:40px auto;
    text-align:center;
}

h1{
    font-size:32px;
    margin-bottom:10px;
}

p{
    margin-bottom:30px;
}

.plano{
    background:white;
    color:#222;
    padding:20px;
    border-radius:15px;
    margin-bottom:20px;
    box-shadow:0 8px 20px rgba(0,0,0,.2);
}

.plano h2{
    margin-bottom:10px;
}

.plano h3{
    color:#2196f3;
    font-size:30px;
    margin-bottom:20px;
}

.btn-comprar{
    width:100%;
    padding:15px;
    border:none;
    border-radius:10px;
    background:#00c853;
    color:white;
    font-size:18px;
    cursor:pointer;
}

.btn-comprar:hover{
    background:#00b248;
}a.btn-comprar{
    display:block;
    text-decoration:none;
    text-align:center;
}