body{
    font-family: Arial;
    max-width: 500px;
    margin: 30px auto;
    padding: 20px;
    background: #f5f5f5;
}
h1 {
    color: #333;
}
input{
    padding: 10px;
    width: 65%;
    border: 2px solid #ddd;
    border-radius: 5px
}
button{
    padding: 10px 15px;
    background: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
li{
    background: white;
    margin: 8px 0;
    padding: 10px;
    border-radius: 5px;
    list-style: none;
}