html - How to use padding/margin to move a div? -

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Easy questions for CSS Masters

I created two squares using div squares. The first one is black and has a red one in it. Every time I want to take the red square into the black square, the black square goes down with it. How can I stop it? 

  & lt; Div class = "black" & gt; & Lt; Div class = "red" & gt; & Lt; / Div & gt; & Lt; Div & gt; .black {width: 500px; Height: 500px; Background: black; }   
 I do not want the black square to go down. How do I stop this?    .red {width: 100px; Height: 100 pixels; Background: Red; Margin-top: 50px; Margin-left: 60px; }   
 Thanks in advance!   
 
 
  .black  status  complete .  
  .black {width: 500px; Height: 500px; Background: black; Status: Completed; }  
     property value: absolute   
 element has been positioned according to its position (not stable) Ancestor element

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