htmlcssimagetransparencyboxsizer

Images with Mouseover Hover: Transparent Boxes Not Same Size as Image

I have some code that added a hover effect of a transparent box over my images with text overlay, however the transparent boxes are not snapping to the size of the images. The transparent boxes seem to be either too small (leaving the top and bottom of the image below to not go transparent) or far too large (causing my page to fall out of alignment entirely). It may be a box-sizing issue? I think I have it set up so that it should automatically become 100% the size of the image, but I may be missing something.

Link to my site: http://jchambliss.aisites.com/imd311/portfolio/sites.html

Necessary code is included here:

#preview {
  max-width: 100%;
  border-collapse: collapse;
}

#text {
  position: absolute;
  opacity: 0;
  max-width: 100%;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
}

/* Web Design Projects */
.sitesAds {
  position: relative;
  border-collapse: collapse;
}

.sitesAds:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}

.sitesTokyo {
  position: relative;
  border-collapse: collapse;
}

.sitesTokyo:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}

.sitesMobile {
  position: relative;
  border-collapse: collapse;
}

.sitesMobile:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}

.sitesRoux {
  position: relative;
  border-collapse: collapse;
}

.sitesRoux:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}
<!DOCTYPE html>
<html>
<head>
<link href="portfolio.css" rel="stylesheet" type="text/css">

    <!--[if lt IE 9]>
        <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js">
        </script>
    <![endif]-->
    
<link href="https://fonts.googleapis.com/css?family=Amita|Encode+Sans+Expanded|Leckerli+One|Merienda+One|Source+Sans+Pro" rel="stylesheet">
</head>

<body>

<div>

<table>
<tr>
   <td><a href="ads.html"><div class="sitesAds"><img src="images/ads.jpg" id="preview" alt="Banner Ads"/>
	   <h3 id="text">Banner Ads</h3></div></a>
   </td>
   <td><a href="tokyo.html"><div class="sitesTokyo"><img src="images/tokyo.jpg" id="preview" alt="One Page Ad Site: Tokyo, Japan"/>
	   <h3 id="text">One Page Ad Site: Tokyo, Japan</h3></div></a>
   </td>
</tr>
<tr>
   <td><a href="mobile.html"><div class="sitesMobile"><img src="images/mobile.jpg" id="preview" alt="Mobile App: Tea Shoppe"/>
	   <h3 id="text">Mobile App: Tea Shoppe</h3></div></a>
   </td>
   <td><a href="roux.html"><div class="sitesRoux"><img src="images/roux.jpg" id="preview" alt="Roux Academy of Art, Media, and Design"/>
	   <h3 id="text">Roux Academy of Art, Media, and Design</h3></div></a>
   </td>
</tr>
</table>
	</div>

</body>
</html>

Solution

  • Use width: 100% on img instead of max-width & remove padding: 0 from #text

    make sure you should use unique ids for each h3 element as id cannot be the same on a single page

    Example:

    .sitesTokyo img {
  width: 100%;
}

#text {
  position: absolute;
  display: flex;
  align-items: center; /* For vertical centering */
  justify-content: center; /* For horizontal centering */
  opacity: 0;
  max-width: 100%;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  margin: 0; /* Remove padding */
  padding: 0; /* Remove margin */
}

    Also have a look at the working snippet below:

    #preview {
  max-width: 100%;
  border-collapse: collapse;
}

#text {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  max-width: 100%;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  margin: 0;
  padding: 0;
}

/* Web Design Projects */
.sitesAds {
  position: relative;
  border-collapse: collapse;
}

.sitesAds:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}

.sitesTokyo {
  position: relative;
  border-collapse: collapse;
}

.sitesTokyo:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}

.sitesMobile {
  position: relative;
  border-collapse: collapse;
}

.sitesMobile:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}

.sitesRoux {
  position: relative;
  border-collapse: collapse;
}

.sitesRoux:hover #text {
  box-sizing: content-box;
  padding: 60px 0;
  opacity: 0.8;
  color: #663366;
  background: #FFFFFF;
  text-decoration: none;
  text-align: center;
  -webkit-transition: opacity 500ms;
  -moz-transition: opacity 500ms;
  -o-transition: opacity 500ms;
  transition: opacity 500ms; 
}
    <!DOCTYPE html>
<html>
<head>
<link href="portfolio.css" rel="stylesheet" type="text/css">

    <!--[if lt IE 9]>
        <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js">
        </script>
    <![endif]-->
    
<link href="https://fonts.googleapis.com/css?family=Amita|Encode+Sans+Expanded|Leckerli+One|Merienda+One|Source+Sans+Pro" rel="stylesheet">
</head>

<body>

<div>

<table>
<tr>
   <td><a href="ads.html"><div class="sitesAds"><img src="http://placehold.it/200x200" id="preview" alt="Banner Ads"/>
	   <h3 id="text">Banner Ads</h3></div></a>
   </td>
   <td><a href="tokyo.html"><div class="sitesTokyo"><img src="http://placehold.it/200x200" id="preview" alt="One Page Ad Site: Tokyo, Japan"/>
	   <h3 id="text">One Page Ad Site: Tokyo, Japan</h3></div></a>
   </td>
</tr>
<tr>
   <td><a href="mobile.html"><div class="sitesMobile"><img src="http://placehold.it/200x200" id="preview" alt="Mobile App: Tea Shoppe"/>
	   <h3 id="text">Mobile App: Tea Shoppe</h3></div></a>
   </td>
   <td><a href="roux.html"><div class="sitesRoux"><img src="http://placehold.it/200x200" id="preview" alt="Roux Academy of Art, Media, and Design"/>
	   <h3 id="text">Roux Academy of Art, Media, and Design</h3></div></a>
   </td>
</tr>
</table>
	</div>

</body>
</html>

    Hope this helps!