.box1 {
background-color: orange;
width: 100px;
height: 100px;
}
.box2 {
background-color: skyblue;
width: 100px;
height: 100px;
/* position: static; */
position:static;
}
.box3 {
background-color: tomato;
width: 100px;
height: 100px;
}
.rect {
width: 50px;
height: 20px;
background-color: lime;
position: absolute;
/* top: 30px;
left: 10px; */
left :30px;
}