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Styling HTML to mimic Facebook like dropdown menu

I need some advice and some help. I am not so much of a css guy, but I want to learn.

I am trying adjust some css for my drop down menu.

I have the following issues:

  • The dropdown button should be as big as the image, leaving only the area of the dropdown triangle.
  • The dropdown triangle should be aligned vertically in the middle and centered horizontally.
  • The dropdown options should be aligned with the right border and open inwards towards the left, instead of the opposite.

Can someone help me with adjusting this? I want to learn the techniques, but trial on error is such a long way.

My code is as folowing:

<html>
<head>
<head>
<body>
    <style>
        body {
            background-color: white;
            font: normal 11px Tahoma,Verdana,Arial,Sans-Serif;
            color: #222;
            height: 380px;
        }

        .dropdown {
            display: block;
            display: inline-block;
            margin: 0px 3px;
            position: relative;
        }

        /* ===[ For demonstration ]=== */

        .dropdown { margin-top: 25px }

        /* ===[ End demonstration ]=== */

        .dropdown .dropdown_button {
            cursor: pointer;
            width: auto;
            display: inline-block;
            padding: 0px 0px;
            border: 1px solid silver;
            -webkit-border-radius: 0px;
            -moz-border-radius: 0px;
            border-radius: 2px;
            font-weight: bold;
            color: #717780;
            line-height: 16px;
            text-decoration: none !important;
            background: white;
        }

        .dropdown input[type="checkbox"]:checked +  .dropdown_button {
            border: 1px solid #3B5998;
            color: white;
            background: silver;
            -moz-border-radius-topleft: 2px;
            -moz-border-radius-topright: 2px;
            -moz-border-radius-bottomright: 0px;
            -moz-border-radius-bottomleft: 0px;
            -webkit-border-radius: 2px 2px 0px 0px;
            border-radius: 2px 2px 0px 0px;
            border-bottom-color: silver;
        }

        .dropdown input[type="checkbox"] + .dropdown_button .arrow {
            display: inline-block;
            width: 1px;
            height: 1px;
            border-top: 5px solid silver;
            border-right: 5px solid transparent;
            border-left: 5px solid transparent;
        }

        .dropdown input[type="checkbox"]:checked + .dropdown_button .arrow { border-color: white transparent transparent transparent }

        .dropdown .dropdown_content {
            position: absolute;
            border: 1px solid #777;
            padding: 0px;
            background: white;
            margin: 0;
            display: none;
        }

        .dropdown .dropdown_content li {
            list-style: none;
            margin-left: 0px;
            line-height: 16px;
            border-top: 1px solid #FFF;
            border-bottom: 1px solid #FFF;
            margin-top: 2px;
            margin-bottom: 2px;
        }

        .dropdown .dropdown_content li:hover {
            background: silver;
        }

        .dropdown .dropdown_content li a {
            display: block;
            padding: 2px 7px;
            padding-right: 15px;
            color: black;
            text-decoration: none !important;
            white-space: nowrap;
        }

        .dropdown .dropdown_content li:hover a {
            color: white;
            text-decoration: none !important;
        }
        .dropdown input[type="checkbox"]:checked ~ .dropdown_content { display: block }
        .dropdown input[type="checkbox"] { display: none }
    </style>    

    Here there will be a lot of text and a lot of other menu buttons. So hope the angle of the dropdown will open to the left instead of the right.
    <div class="dropdown" id="dropdown">
        <input type="checkbox" id="drop1" />
        <label for="drop1" class="dropdown_button"><img src="http://ichef.bbci.co.uk/wwfeatures/43_43/images/live/p0/17/tx/p017txf6.jpg" height="43" width="43" /><span class="arrow"></span></label>
        <ul class="dropdown_content">
            <li><a href="#">Privacy settings</a></li>                       
            <li><a href="#">Account settings</a></li>
            <li><a href="#">Logout</a></li>                                
        </ul>

    </div>
</body>
</html>

Now I managed to fix the border around the image by correcting the padding padding: 0px 0px; but then I feel like working in blind...can someone help pointing me where to fix my adjustments?

Give your span an id of 'arrowSpan' and apply this style in your css:

#arrowSpan{
    display:block;
    margin-left:17px;
    margin-top:2px;
    margin-bottom:5px;
}

Also add position:absolute; and right:0 to your .dropdown .dropdown_content styles.

Here's a fiddle: http://jsfiddle.net/zsp7t/1/

As for collapsing the dropdown when clicking outside, it is possible. There's a bunch of examples online using jQuery, here's a couple that can help you get started:

You also mentioned that you wanted to learn more, so check these sites out to help you increase your skills:

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