#blockRed {
background-color: red;
width: 412px;
height: 412px;
position: relative;
}

#blockBlue {
background-color: darkBlue;
width: 412px;
height: 412px;
position: relative;
}

#blockRed2 {
background-color: red;
width: 412px;
height: 412px;
position: relative;
}

#blockBlue2 {
background-color: darkBlue;
width: 412px;
height: 412px;
position: relative;
}

#rectangle1 {
background-color: red;
width: 175px;
height: 35px;
position: absolute;
}

#rectangle2 {
background-color: red;
width: 175px;
height: 35px;
position: absolute;
}