body {
    text-align: center;
    position: relative;
}

.level {
    margin-top: 30px;
    font-size: 18px;
}

.level button {
    padding: 3px 8px;
    background: rgb(67, 183, 189);
    /* border: 1px solid rgb(129, 129, 129); */
    border: none;
    color: white;
    border-radius: 3px;
    outline: none;
    cursor:pointer;
}
.level button:hover {
    background: rgb(23, 132, 138);
}
.row {
    margin: 0;
    padding: 0;
    overflow: hidden;
    letter-spacing: -8px;
}
.col {
    display: inline-block;
    background: rgba(32, 226, 255, 0.41);
    border: 1px solid rgb(129, 129, 129);
    margin: 1.5px;
    width: 23px;
    height: 23px;
    letter-spacing: normal;
    position: relative;
}

.col span {
    display: inline-block;
    position: relative;
    top: 2px;
    opacity: 0;
    font-weight: bold;
    /* 标准箭头 */
    cursor:default;
}

.col:hover {
    background: blue;
}

.gameBox {
    margin-top: 30px;
}

.img-flag {
    position: absolute;
    top: 3px;
    left: 3.5px;
    width: 18px;
    height: 18px;
}

.hide {
    display: none;
}

.boom {
    background: url('boom.svg') no-repeat 2.5px 2px;
    background-size: 18px 18px;
}

.div-boom {
    font-size: 30px;
    position: fixed;
    top: 50px;
    left: 50%;
}

.info {
    margin-top: 30px;
}
.info p {
    display: inline-block;
    width: 130px;
    margin: 0 10px;
}
.info p span {
    color: rgb(67, 183, 189);
}
.num-1 {
    color: rgb(8, 153, 235);
}
.num-2 {
    color: rgb(255, 45, 178);
}
.num-3 {
    color: rgb(109, 224, 176);
}
.num-4 {
    color: rgb(8, 153, 235);
}
.num-5 {
    color: rgb(255, 167, 45);
}
.num-6 {
    color: rgb(49, 140, 102);
}
.num-7 {
    color: rgb(168, 55, 237);
}

.num-8 {
    color: rgb(15, 254, 154);
}