body {
  background-color: #f4f4f4; 
}

.color-grid {
  width: 90%;
  margin: 30px auto;
}

.color-box {
  width: 100px;
  height: 100px;
  display: inline-block;
  margin: 30px;
  border-radius: 10px;
  box-shadow: 1px 2px 4px 
  3px rgba(0, 0, 0, 0.2);
}

.color1 {
  background-color: #FF0000;
}

.color2 {
  background-color: rgb(220, 0, 0);
}

.color3 {
  background-color: darkred;
}

.color4 {
  background-color: hsl(0, 100%, 18%);
}

.color5 {
  background-color: rgb(40, 0, 0);
}