body {
    background-color: #f4f4f4;
}

.color-box {
    width: 100px;
    height: 100px;
}

.color1 {
    background-color: #000000;
}

.color2 {
    background-color: rgb(255,0,0);
}

.color3 {
    background-color: orange;
}

.color4 {
    background-color: hsl(200, 75%, 60%);
}

.color5 {
    background-color: #FFFFFF;
}