body {
    font-family: Arial, sans-serif;
    margin: 20px;
}
#game {
    margin-top: 20px;
    display: inline-block;
}
.row {
    display: flex;
}
.cell {
    width: 30px;
    height: 30px;
    border: 1px solid #888;
    text-align: center;
    vertical-align: middle;
    line-height: 30px;
    font-size: 18px;
    background: url('image/9.gif') center center no-repeat;
    background-size: cover;
    cursor: pointer;
    user-select: none;
    touch-action: manipulation;
    transition: background 0.2s;
}
.cell:hover:not(.open) {
    background: url('image/12.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count0 { 
    background: url('image/0.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count1 { 
    background: url('image/1.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count2 { 
    background: url('image/2.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count3 { 
    background: url('image/3.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count4 { 
    background: url('image/4.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count5 { 
    background: url('image/5.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count6 { 
    background: url('image/6.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count7 { 
    background: url('image/7.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count8 { 
    background: url('image/8.gif') center center no-repeat;
    background-size: cover;
}
.cell.open.count9 { 
    background: url('image/9.gif') center center no-repeat;
    background-size: cover;
}
.cell.flag {
    background: url('image/10.gif') center center no-repeat;
    background-size: cover;
}
.cell.flag:hover {
    background: url('image/10.gif') center center no-repeat;
    background-size: cover;
}
.cell.mine {
    background: url('image/13.gif') center center no-repeat;
    background-size: cover;
}
/* 可选：重置按钮样式 */
#resetBtn {
    margin-left: 10px;
    padding: 2px 10px;
    font-size: 14px;
}