body {
    background-color: #f5f5f5;
    padding-top: 40px;
    padding-bottom: 40px;
}

.container {
    max-width: 600px;
}

.copy-button {
    margin-top: 10px;
}

.similar-chars {
    font-family: "Courier New", Courier, monospace;
	letter-spacing: 2px;
}