#top {
display:block;
display: absolute;
background-color:;
top: 170px;
}

#second_from_top {
display: block;
position: absolute;

}

#top {
display:block;
display: absolute;
background-color:;
top: 170px;
}

#second_from_top {
display: block;
position: relative;

}

Change second block technical relative stylesheet
Change second block technical relative stylesheet