body{
    background-color: black;
}
.div1{
    color: red;  font-size: 40px; background-color: aqua; padding: 25px;
}
.div2{
    color: blue;  font-size: 30px; background-color: aquamarine; padding: 25px;
}
.div3{
    color: green;  font-size: 20px; background-color: brown; padding: 25px;
}