style.css

.grid-unit    {
    background-color: white;
    height: 30px;
    width: 30px;
    border-style: solid;
    border-width: 2px;
    margin: 0px !important;
    padding: 0;
    display: inline-block;
}

#color-indicator {
    width: 60px;
}

.grid-container {
    width: 100%;
    height: 75%;
}

.grid-row {
    display: flex;
    justify-content: center;
}

#white {
    background-color: white;
}

#black {
    background-color: black;
}

#green {
    background-color: green;
}

#red {
    background-color: red;
}

#blue {
    background-color: blue;
}

#yellow {
    background-color: yellow;
}

#purple {
    background-color: purple;
}

#magenta {
    background-color: magenta;
}

#pink {
    background-color: pink;
}