* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    padding: 100px 20px;
    background: linear-gradient(to right, lightgreen, lightblue);
    text-align: center;
}

.container {
    background: white;
    padding: 40px;
    max-width: 400px;
    margin: auto;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.9);
    border-radius: 20px;
}

.input {
    margin-top: 20px;
}

p {
    color: green;
}

button {
    margin-top: 10px;
    cursor: pointer;
    padding: 6px 20px;
    border: 3px solid grey;
    border-radius: 10px;
}

.hidden {
    display: none;
}