pure css arrow help

Question

The image below describes the issue. I am creating our comment forms. And want to create the pointer arrow in ffffff background color, and a border of 1px aaaaaa and border

Answer 1

Using some :before and :after magic, I was able to create this with the following code:

<div class="comment">
    <div>
        <p>Here is a comment</p>
    </div>
</div>

__

.comment div:before {
    content:"";
    border:10px solid transparent;
    border-bottom-color:#ccc;
    width:0px;
    height:0px;
    display:block;  
    position:absolute;
    top:-10px;
    left:21px;
}
.comment div:after {
    content:"";
    border:12px solid transparent;
    border-bottom-color:#fff;
    width:0px;
    height:0px;
    display:block;  
    position:absolute;
    top:-10px;
    left:19px;
}
.comment {
    position:relative;
    margin:10px;   
    padding:10px;
}
.comment div {
    padding:1em;
    border:1px solid #ccc;   
}

It's not perfect, but it avoids the need for an empty tag to contain your arrow.

Demo: http://jsfiddle.net/yGsKd/2/

Answer 2

@422; you can do with css like this rotate property.

css

#C{
    height:200px;
    width:200px;
    background:red;
    border:1px solid #000;
    position:relative;
    }

.arrow{
     height: 20px;
     width: 20px;
     margin-left:30px;
    margin-top:-11px;
    background:red;
    -moz-transform:rotate(45deg);
    -webkit-transform:rotate(45deg);
    border-right:1px solid #000;
    border-bottom:1px solid #000;
    position:absolute;
    bottom:-10px;
    left:20px;
}

html

<div id="C"><span class="arrow"></span></div>

you can use :after, :before instead of span.

for IE you can use ie filter

filter: progid:DXImageTransform.Microsoft.Matrix(sizingMethod='auto expand', M11=0.7071067811865476, M12=-0.7071067811865475, M21=0.7071067811865475, M22=0.7071067811865476); /* IE6,IE7 */
-ms-filter: "progid:DXImageTransform.Microsoft.Matrix(SizingMethod='auto expand', M11=0.7071067811865476, M12=-0.7071067811865475, M21=0.7071067811865475, M22=0.7071067811865476)"; /* IE8 */

CHECK THIS http://jsfiddle.net/sandeep/Hec3t/7/