body {
    background-color: rgb(255, 255, 255)
}
.center {
    width: 800px;
    height: 150px;
    margin: auto;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    max-width: 100%;
    max-height: 100%;
    overflow: auto;
    text-align: center;
}

.response {
    font-size: 40px;
    font-family: "Arial Black", Gadget, sans-serif;
    color: rgb(0, 0, 0);
}

.platform {
    font-size: 8px;
    font-family: "Arial Black", Gadget, sans-serif;
    color: rgb(255, 255, 255);
}