body {
    text-align: center;
}

.btn-container {
    text-align: center;
    margin-top: 30px;
}

.btn-container .btn-item {
    display: inline-block;
    width: 20%;
    vertical-align: top;
    cursor: pointer;

}

.btn-container .btn-item img {
    display: inline-block;
    width: 60%;
}

.deck-container {
    display: inline-block;
    width: 200px;
    height: 200px;
    /* border: 1px solid #1890ff; */
    box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.2);
    margin-top: 30px;
    padding: 10px;

    border-radius: 100%;
}

.deck {
    position: relative;
}

.deck .top {
    transform: rotate(-90deg);
    width: 42px;
}

.deck .left {
    transform: rotate(180deg);
    left: 0;
    top: 75px;
    position: absolute;
    width: 42px;
}

.deck .right {
    transform: rotate(0deg);
    right: 0;
    top: 75px;
    position: absolute;
    width: 42px;
}

.deck .bottom {
    transform: rotate(90deg);
    position: absolute;
    top: 150px;
    left: 80px;
    width: 42px;
}

.time-container {
    margin: 0.5rem 20px;
    /* margin-top: 30px; */
    position: relative;
}

.mark-area-container {
    z-index: -1;
    display: inline-block;
    width: 100%;
    height: 1rem;
    /* outline: 1px solid red; */
    /* margin-bottom: 20px; */
    position: absolute;
    left: 0;
    top: 0;
    text-align: left;
    background: #f3f3f3;
}

.area {
    display: inline-block;
    height: 1rem;
    vertical-align: top;
    background: red;
    width: 20px;
    position: absolute;
}