.blue_box {
    margin-top: 23px;
    width: 100%;
}

.register_container {
    width: 100%;
}

.cancel_btn {
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

@media screen and (max-width: 768px) {
    .center {
        width: calc(100% - 46px);
        position: absolute;
        bottom: 23px;
    }
}

@media screen and (min-width: 769px) {
    .center {
        width: calc(50% - 120px);
        transform: translateX(calc(50% + 60px));
        position: absolute;
        bottom: 12vh;
    }

    .title {
        margin-top: 20vh;
    }
}