* {
    box-sizing: border-box;
    margin: 0;
    text-align: center;
}
h1{
    color: aqua;
}
.container {
    width:300px;
    height: 300px;
    margin: 0 auto;
}
.row {
    display: flex;
    flex-direction: row;
}
.square {
    width: 100px;
    height: 100px;
    background-image: url("./n.png");
}
#alert {
    display: none;
    position:absolute;
    z-index: 1;
    top:0;
    left:0;
    text-align: center;
    height: 100vh;
    width: 100vw;
    opacity: .8;
    background-color: black;
    color:cornflowerblue;
}
#alert p {
    font-size: larger;
    margin: 45vh auto;
}
#win1, #win2 {
    display: none;
    position:absolute;
    z-index: 1;
    top:0;
    left:0;
    text-align: center;
    height: 100vh;
    width: 100vw;
    opacity: .8;
    background-color: black;
    color:cornflowerblue;
}
#win1 p, #win2 p {
    font-size: larger;
    margin: 45vh auto;
}

footer {
    margin-top:30vh;
    font-size: small;
}