CODEWITHSUNDEEP
javascripthtmlcsscss-position
Chris
Chris

Reputation: 944

CSS positioning, need some advice

Here is my HTML code

<div id="container">
        <div id="topleft"></div>
        <div id="topright"></div>
        <div id="bottomleft"></div>
        <div id="bottomright"></div>
    </div>

Here is my css code

#container{
    width: 400px;
    height: 400px;
    background-color: red;
    margin: 0 auto;

}

#topright{
    width: 50px;
    height: 50px;
    background-color: black;
    position: relative;
    top:0px;
    right:0px;
}
#topleft{
    width: 50px;
    height: 50px;
    background-color: black;
    position:relative;
    top:0px;
    left:350px;
}

#bottomright{
    width: 50px;
    height: 50px;
    background-color: black;
    position: relative;
    top:250px;
    right:0px;
}
#bottomleft{
    width: 50px;
    height: 50px;
    background-color: black;
    position:relative;
    top:250px;
    left:350px;
}

Here is output http://s23.postimg.org/dhgy9mpq3/image.png

What I need to obtain, is that all 4 black square to be positioned in the corner of the red square like in this image, what should i change or add in code? THX http://postimg.org/image/r5kv15l5v/

Upvotes: 3

Views: 104

Answers (5)

codingrose
codingrose

Reputation: 15699

Add position:relative to #container and position:absolute to inner divs.

You can combine common properties with comma, like 

#bottomright,#bottomleft{css properties}

CSS:

#container {
    position: relative;
}
#container > div {
    width: 50px;
    height: 50px;
    background-color: black;
    position: absolute;
}
#bottomright, #bottomleft {
    bottom:0;
}
#topright, #topleft {
    top:0;
}
#bottomleft, #topleft {
    left:0;
}
#bottomright, #topright {
    right:0;
}

DEMO here.

Upvotes: 6

user1533868
user1533868

Reputation:

solution

Why your css failed : For bottom aligment, use bottom:0;left:0; instead of top and right....this is correct semantics which otherwise fails the concept of position...also, make child absolute and parents relative!! :) 

 #container {
        width: 400px;
        height: 400px;
        background-color: red;
        margin: 0 auto;
        position: relative;
    }
    #topright {
        width: 50px;
        height: 50px;
        background-color: black;
        position: absolute;
        top:0px;
        right:0px;
    }
    #topleft {
        width: 50px;
        height: 50px;
        background-color: black;
        position:absolute;
        top:0px;
        left:0;
    }
    #bottomright {
        width: 50px;
        height: 50px;
        background-color: black;
        position: absolute;
        bottom:0;
        right:0px;
    }
    #bottomleft {
        width: 50px;
        height: 50px;
        background-color: black;
        position:absolute;
        bottom:0;
        left:0;
    }

Upvotes: 1

Green Wizard
Green Wizard

Reputation: 3667

the following css will work 

#container {
    background-color: #FF0000;
    height: 400px;
    margin: 0 auto;
    position: relative;
    width: 400px;
}
#topleft {
    background-color: #000000;
    height: 50px;
    left: 0;
    position: absolute;
    top: 0;
    width: 50px;
} 

#topright {
    background-color: #000000;
    height: 50px;
    position: absolute;
    right: 0;
    top: 0;
    width: 50px;
}
#bottomleft {
    background-color: #000000;
    height: 50px;
    left: 350px;
    position: absolute;
    top: 350px;
    width: 50px;
}
#bottomright {
    background-color: #000000;
    height: 50px;
    left: 0;
    position: absolute;
    top: 350px;
    width: 50px;
}

Upvotes: 0

chanchal118
chanchal118

Reputation: 3647

Make #container position relative. And div inside that absolute.

full code

#container{
    width: 400px;
    height: 400px;
    background-color: red;
    margin: 0 auto;
    position: relative; //change

}

#topright{    
    width: 50px;
    height: 50px;
    background-color: black;
    position: absolute; //change
    top:0px;
    right:0px;
}
#topleft{
    width: 50px;
    height: 50px;
    background-color: black;
    position:absolute; //change
    top:0px;
    left:0px;  //change
}

#bottomright{
    width: 50px;
    height: 50px;
    background-color: black;
    position: absolute;
    bottom:0px; //change
    right:0px;
}
#bottomleft{
    width: 50px;
    height: 50px;
    background-color: black;
    position:absolute; //change
    bottom:0px; //change
    left:0px; //change
}

Upvotes: 0

Anup
Anup

Reputation: 9738

Demo

#container{
    width: 400px;
    height: 400px;
    background-color: red;
    margin: 0 auto;
    position: relative;

}

#topright{    
    width: 50px;
    height: 50px;
    background-color: black;
    position: absolute;
    top:0px;
    right:0px;
}
#topleft{
    width: 50px;
    height: 50px;
    background-color: black;
    position:absolute;
    top:0px;
    left:0;
}

#bottomright{
    width: 50px;
    height: 50px;
    background-color: black;
    position: absolute;
    bottom:0px;
    right:0px;
}
#bottomleft{
    width: 50px;
    height: 50px;
    background-color: black;
    position:absolute;
    bottom:0;
    left:0;
}

Upvotes: 0

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