Mastering CSS Sprites: A Guide to Aligning Sprite Buttons at the Bottom

In my web app, I have a bottom navigation bar with 9 buttons, each represented by a Sprite Image having 3 different states.

The challenge I'm facing is aligning all the images at the bottom of the nav bar or div. The icons vary slightly in size, and there is text underneath each icon within the PNG file.

To ensure that all the text aligns properly, I need to align all the buttons at the bottom. Is there a CSS or HTML solution for achieving this?

Any assistance would be greatly appreciated.

Thank you,

D

Please see the code snippet below:

<html>
<head>

<link href='http://fonts.googleapis.com/css?family=Lobster&amp;v2' rel='stylesheet' type='text/css' />
<link href='http://fonts.googleapis.com/css?family=Lobster+Two&amp;v2' rel='stylesheet' type='text/css' />
<style type="text/css">

body {
    background: #000;
     color: #ffffff;
     font-family: 'Lobster', cursive;
     font-family: 'Lobster Two', cursive;
    background:#ffffff url('../Background1.png');
 }

 /* Styling for Boxes */
 .box
 {
    width: 1700px;
    height: 100px;
    margin: 0;
    padding: 0;
 }

 .box a
 {
    float: left;
    margin-right:20px;
 }

/* Logo Buttons Styling */
.sprite-Bunches-small-normalcopy { 
    background-image: url('../Images/Sprites/giantsprite.png');
    background-position: 0 -94px; 
    width: 139px; 
    height: 44px; 
    display: block;
    text-indent: -9999px;
    vertical-align: bottom;
}

...

/* JavaScript Toggle Functionality */
$(document).ready(function(){
    $('.sprite-chat-normal').click(function() {
         $(this).toggleClass('sprite-chat-normal').toggleClass('sprite-chat-normal1').toggleClass('chat-active');
     });   
  });

...

</style>
 <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
 </head>
 <body>
 <div class="box">
 <a class="sprite-camera-normal" href="#"></a> 
 <a class="sprite-chat-normal" href="#"></a>
 <a class="sprite-invite-normal" href="#"></a>
 <div style="float:right;">
 <a class="sprite-mic-normal" href="#"></a>
...

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

Answer №1

It appears that this question is more focused on photoshop editing rather than coding. If your HTML markup is structured as shown below, here's how you could approach it:

<nav>
     <ul>
          <li class="icon-a">
               <a>
                    <span class="icon"></span>
                    Text
               </a>
          </li>

          <li class="icon-b">
               <a>
                    <span class="icon"></span>
                    Text
               </a>
          </li>
     </ul>
</nav>

To determine the height of the tallest icon, set it as the height for all <li> elements. Similarly, find the width of the widest icon and apply that as the width for all <li> elements.

Arrange the icons in your sprite file meticulously and space them evenly based on the maximum width and height mentioned earlier (you can use photoshop tools like rulers and guides for better alignment). Each icon state should be in a separate row. Properly aligning the icons at the bottom depends on your layout in photoshop.

For example, if your tallest icon is 40px and widest is 30px, consider setting the <li> height to 60px to accommodate text placement below the icon.

nav li {
   width: 30px;
   height: 60px;
   display: block;
   float: left;
}

nav li a {
   width: 30px;
   height: 60px;
   line-height: 15px;
   display: block;
   text-align: center
}

nav li a span {
   width: 30px;
   height: 40px;
   padding-bottom: 5px;
   display: block;
   background: url(icons.png) no-repeat
}

nav li.icon-a span {background-position: 0 0}
nav li.icon-a span:hover {background-position: 0 -40px}
nav li.icon-a span:active {background-position: 0 -80px}

nav li.icon-b span {background-position: -30px 0}
nav li.icon-b span:hover {background-position: -30px -40px}
nav li.icon-b span:active {background-position: -30px -80px}

Answer №2

It is important to ensure that all icons in your sprite are evenly positioned, regardless of their individual size.

For example, if each button has a space of 36 x 36px, you should align each icon at the bottom of a 36x36 square within your sprite. This way, you can easily position the sprite using a 36px grid.

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