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

header{
    background:#1E88E5;
    color:white;
    padding:15px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:15px;
}

.hero{
    text-align:center;
    padding:80px 20px;
}

.hero h1{
    font-size:35px;
}

button{
    background:#28a745;
    color:white;
    border:none;
    padding:12px 25px;
    border-radius:5px;
    cursor:pointer;
    font-size:16px;
}