input[id^="text"] {
    width: 3em;
    height: 3em;
    text-align: center;
    font-size: 1em;
    margin: 0;
    padding: 0;
}
colgroup, tbody { 
    border: solid medium; 
}

table#grid { 
    border-collapse: collapse; 
    width: fit-content;
}

#board-container{
    display: block;
    float: left;
    min-width: 10em;
}

#buttons{
    display: block;
    float: right;
}

td[id^="td"] { 
    border: solid thin; 
    height: 3em;
    width: 3em;
    text-align: center; 
    padding: 0;
    margin: 0;
}

#board{
    text-align: center;
}

.s-action{
    min-width: 15em;
    padding: 0;
}

.content {
    min-height: 100%;
}

#footer{
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 3em;
    margin-top: 2em;
    text-align: center;
    clear: both;
    display: block;
}

.valid-config{
    color: green;
}

.invalid-config{
    color: red;
}

/* Larger than desktop */
@media (min-width: 1000px) {}