div in div position code example

Example 1: html position div inside div

.textblock-container {
width: 500px;
height: 500px;
border: 1px solid red;
position: relative;
}

div.textblock {
width: 100px;
height: 100px;
line-height: 100px;
border: 1px solid black;
position: absolute;
text-align: center;             
background: rgb(0, 150, 0);
background: rgba(0, 150, 0, .5);
}

Example 2: html position div

<!DOCKTYPE html> <!-- Start of coding page -->
<html> <!-- Start of html coding -->
  <head> <!-- Start of head -->
    <title>TITLE<title> <!-- Title -->
    <script>
      //JavaScript
    </script>
    <style>
      /* CSS */
    </style>
  </head> <!-- End of head -->
  <body> <!-- Start of body -->
    <div id='mydiv' style = "position:relative; left:0px; top:100px;">
      Hello! 
      <!-- Use that style tag to positions things, have a play around with it! -->
    </div>
  </body> <!-- End of body -->
<html> <!-- End of html coding -->
<!-- Add this line of code next to your id: 

style = "position:relative; left:0px; top:100px;" 

too let you position divs where you want them, you can even position
them ontop of other divs! -->