.square {

    float: left;
    width: 30%;
    height: 0;
    padding-bottom: 30%;
    background-color: lime;
    margin: 1.66%;
}

.container {
    margin: 0 auto;
    max-width: 600px;

}

body {

    background-color: #232323;
}

h1 {
    color: white;

}

/* #message {
    color: white;
} */

#stripe {
    background-color: white;
    height: 30px;
    text-align: center;
}

.selected {
    background-color: aquamarine;
}