body{
    margin:0;
    font-family:Arial, Helvetica, sans-serif;
    background:#f4f4f4;
}

header{
    background:#0078D4;
    color:white;
    text-align:center;
    padding:40px;
}

nav{
    background:#222;
    text-align:center;
    padding:15px;
}

nav a{
    color:white;
    text-decoration:none;
    margin:20px;
    font-size:18px;
}

section{
    padding:30px;
}

.card{
    background:white;
    padding:20px;
    margin:20px 0;
    border-radius:10px;
    box-shadow:0px 2px 5px gray;
}

button{
    background:#0078D4;
    color:white;
    border:none;
    padding:12px 25px;
    border-radius:5px;
    cursor:pointer;
}

button:hover{
    background:#005999;
}

footer{
    background:#222;
    color:white;
    text-align:center;
    padding:20px;
}