body {
    background-color: #ECEEF1;
}
#mainDiv {
    margin: auto;
    height: 1000px;
    width: 1000px;
}
.title {
    color: #5756A6;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.subtitle {
    color: #FF66B2;
    justify-content: center;
    align-items: center;
    text-align: center;
}