* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Montserrat';
}
body {
    background-color: #232323;
}
.square {
    background-color: blueviolet;
    width: 30%;
    padding-bottom: 30%;
    float: left;
    margin: 1.66%;
    border-radius: 15px;
    transition: background-color 0.3s;
}
.container {
    max-width: 600px;
    margin: 0 auto;
}
h1 {
    color: white;
    text-align: center;
    padding: 30px;
    font-weight: 600;
}
h2 {
    text-align: center;
    color: white;
    font-size: 40px;
    padding-top: 20px;
    font-weight: normal;
}
h3 {
    color: rgb(0, 0, 0);
    text-align: center;
    width: 20%;
}

#stripe {
    padding: 20px 0;
    background: rgb(219, 219, 219);
    text-align: center;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 30px;
}

#stripe button {
    border: none;
    padding: 5px 10px;
    border: 1px solid black;
    border-radius: 5px;
    outline: none;
}

.selected {
    background-color: grey;
}