#grid {
    margin: auto;
    width: 200px;
    border: 3px solid #73AD21;
    padding: 10px
}

.cell {
    height: 20px;
    width: 20px;
    background-color: #999999;
    border: 1px solid black;
    display: table-cell;
    font-size: 10;
    text-align: center
}

.row {
    display: block
}

.clicked {
    background-color: #DDDDDD
}

.mine {
    background-color:##DD0000
}

.mark {
    background-color: #FF0000
}

h1 {
    text-align: center
}

h2 {
    text-align: center
}

h3 {
    text-align: center
}

li {
    text-align: center;
}

ul {
    text-align: center;
    width: 600px;
    display: block;
    margin-left: auto;
    margin-right: auto
}

p {
    text-align: center
}
#buttons {
    margin: 0 auto;
    display: block;
    width: 315px;
    text-align: center
}
button {
    display: inline-block;
    margin: auto;
    width: 100px
}
#postGame {
    text-align: center;
    height: 100px;
}

.unselectable {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: default
}