#container {
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
#container #btn {
    padding: 15px;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    border: 2px solid #ddd;
    font-size: 25px;
}
#container #btn:hover {
    color: #ff0080;
}
#container #btn .cnt {
    color: #0075FF;
    font-weight: bold;
}