/* BASIC css start */
.board_button { display: block;
    margin: 0 auto;
    margin-top: 30px;
    width: 150px;
    height: 50px;
    line-height: 50px;
    background: var(--main-color);
    color: #fff;
    font-size: 18px;
    font-weight: 500; text-align:center; }
/* BASIC css end */