body {
    color: rgb(0, 0, 0);
}

.center_pannel {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    height: 500px;
    width: 800px;
    border: 2px solid rgb(25, 25, 25);
    background-color: rgb(214, 214, 214);
    border-radius: 10px;
}