如何在动态图像表上添加叠加标签？

Question

I need to add an overlay labels on a table of images, these images are randomly shuffled every time, but there will be always location number on top of each image corners. How can I add that using HTML? get a look at a sample:

Here is my table code, what should I add to add labels on my images?

<table id="userArrayTable" >
<tr id="trHeader">
<td id="td">1</td> <td id="td">2</td> <td id="td">3</td> <td id="td">4</td>
</tr>
<tr>
<td><img src="images/foodicons/food-1.jpg" width="50" height="50"/></td> <td><img src="images/foodicons/food-2.jpg" width="50" height="50"/></td> <td><img src="images/foodicons/food-3.jpg" width="50" height="50"/></td> <td><img src="images/foodicons/food-4.jpg" width="50" height="50"/></td> 
</tr>

<tr id="tr2">
<td><img src="images/fruitsicons/fruites-1.jpg" width="50" height="50"/></td> <td><img src="images/fruitsicons/fruites-2.jpg" width="50" height="50"/></td> <td><img src="images/fruitsicons/fruites-3.jpg" width="50" height="50"/></td> <td><img src="images/fruitsicons/fruites-4.jpg" width="50" height="50"/></td>  
</tr>

<tr>
<td><img src="images/animalsicons/animal-1.jpg" width="50" height="50"/></td> <td><img src="images/animalsicons/animal-2.jpg" width="50" height="50"/></td> <td><img src="images/animalsicons/animal-3.jpg" width="50" height="50"/></td> <td><img src="images/animalsicons/animal-4.jpg" width="50" height="50"/></td>   
</tr>

<tr id="tr4">
<td><img src="images/jobsicons/job-1.jpg" width="50" height="50"/></td> <td><img src="images/jobsicons/job-2.jpg" width="50" height="50"/></td> <td><img src="images/jobsicons/job-3.jpg" width="50" height="50"/></td> <td><img src="images/jobsicons/job-4.jpg" width="50" height="50"/></td> 
</tr>

</table>



@import url(https://fonts.googleapis.com/css?family=Roboto:300);

.login-page {
  width: 360px;
  padding: 0 0 0;
  margin: auto;
}
.form {
  position: relative;
  z-index: 1;
  background: #FFFFFF;
  max-width: 360px;
  margin: 0 auto 100px;
  padding: 45px;
  text-align: center;
  box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2), 0 5px 5px 0 rgba(0, 0, 0, 0.24);
}
.form input {
  font-family: "Roboto", sans-serif;
  outline: 0;
  background: #f2f2f2;
  width: 100%;
  border: 0;
  margin: 0 0 15px;
  padding: 15px;
  box-sizing: border-box;
  font-size: 14px;
}
.form button {
  font-family: "Roboto", sans-serif;
  text-transform: uppercase;
  outline: 0;
  background: #4CAF50;
  width: 100%;
  border: 0;
  padding: 15px;
  color: #FFFFFF;
  font-size: 14px;
  -webkit-transition: all 0.3 ease;
  transition: all 0.3 ease;
  cursor: pointer;
}
.form button:hover,.form button:active,.form button:focus {
  background: #43A047;
}
.form .message {
  margin: 15px 0 0;
  color: #b3b3b3;
  font-size: 12px;
  padding-top: 10px;

}   
.form .message a {
  color: #DBEFDC;
  text-decoration: none;
}
.form .register-form {
  display: none;
}
.container {
  position: relative;
  z-index: 1;
  max-width: 300px;
  margin: 0 auto;
}
.container:before, .container:after {
  content: "";
  display: block;
  clear: both;
}
.container .info {
  margin: 50px auto;
  text-align: center;
}
.container .info h1 {
  margin: 0 0 15px;
  padding: 0;
  font-size: 36px;
  font-weight: 300;
  color: #1a1a1a;
}
.container .info span {
  color: #4d4d4d;
  font-size: 12px;
}
.container .info span a {
  color: #000000;
  text-decoration: none;
}
.container .info span .fa {
  color: #EF3B3A;
}
body {
  background: #76b852; /* fallback for old browsers */
  background: -webkit-linear-gradient(right, #76b852, #8DC26F);
  background: -moz-linear-gradient(right, #76b852, #8DC26F);
  background: -o-linear-gradient(right, #76b852, #8DC26F);
  background: linear-gradient(to left, #cccccc, #cccccc);
  font-family: "Roboto", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;      
}

#userArrayTable td {
padding:0px 8px;
height:10px;
font-size:18px;
font-weight:bold;
text-align:center;
}

#trHeader
{
background-color:#CCCCCC;
color:#000;
font-size:40px;
}

Answer 1

You can add a span element after each img and style it to be on the top of the img like this:

#userArrayTable td {
  position:relative;
}
#userArrayTable span {
  position:absolute;
  right:10px;
  bottom:10px;
  z-index:10;
  padding:10px 15px;
  border-radius:50%;
  background:purple;
  color:white;
  font-size:1.5em;
}

<table id="userArrayTable">
  <tr id="trHeader">
    <td id="td">1</td>
    <td id="td">2</td>
  </tr>
  <tr>
    <td>
      <img src="http://placekitten.com/200/200"/>
      <span>A</span>
    </td>
    <td>
      <img src="http://placekitten.com/200/200"/>
      <span>B</span>
    </td>
  </tr>
  <tr id="tr2">
    <td>
      <img src="http://placekitten.com/200/200"/>
      <span>Z</span>
    </td>
    <td>
      <img src="http://placekitten.com/200/200"/>
      <span>X</span>
    </td>
  </tr>
</table>

</div>