body{
    font-family: Arial, sans-serif;
    background-color: #f4f6f8;
    margin: 0;
    padding: 0;
}
header{
    background-color: #1e90ff;
    color: white;
    padding: 15px;
    text-align: center;
}

nav{
    background-color: #333;
    padding: 10px;
    text-align: center;
}

nav a{
    color: white;
    margin: 0 10px;
    text-decoration: none;
}
nav a:hover{
    text-decoration: underline;
}
main{
    padding: 20px;
}
button{
    padding: 8px 15px;
    background-color: #1e90ff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover{
    background-color: #333;
}

footer{
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
    margin-top: 20px;
}