ภาพด้านใน div มีพื้นที่พิเศษด้านล่างของภาพ

#wrapper {
  border: 1px solid red;
  width:200px;
}
img {
  width:200px;
}

<div id="wrapper">
  <img src="http://i.imgur.com/RECDV24.jpg" />
</div>

div {
  border: solid black 1px;
  margin-bottom: 10px;
}

#align-middle img {
  vertical-align: middle;
}

#align-base img {
  vertical-align: bottom;
}

#display img {
  display: block;
}

<div id="default">
<h1>Default</h1>
  The quick brown fox jumps over the lazy dog <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/VangoghStarry-night2.jpg/300px-VangoghStarry-night2.jpg" alt="">
</div>

<div id="align-middle">
<h1>vertical-align: middle</h1>
  The quick brown fox jumps over the lazy dog <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/VangoghStarry-night2.jpg/300px-VangoghStarry-night2.jpg" alt=""> </div>
  
  <div id="align-base">
<h1>vertical-align: bottom</h1>
  The quick brown fox jumps over the lazy dog <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/VangoghStarry-night2.jpg/300px-VangoghStarry-night2.jpg" alt=""> </div>

<div id="display">
<h1>display: block</h1>
  The quick brown fox jumps over the lazy dog <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/VangoghStarry-night2.jpg/300px-VangoghStarry-night2.jpg" alt="">
</div>

div{border:1px solid red;font-size:30px;}
img{width:100px;height:auto;}

<div>
  <img src="http://i.imgur.com/RECDV24.jpg" />jpq are letters with descender
</div>

div {width: 100px;border: 1px solid red;}
img {width: 100px;height: auto;}

.block img{
  display:block;
}
.bottom img{
  vertical-align:bottom;
}

<p>Default:</p>
<div>
  <img src="http://i.imgur.com/RECDV24.jpg" />
</div>
<p>With display:block;</p>
<div class="block">
  <img src="http://i.imgur.com/RECDV24.jpg" />
</div>
<p>With vertical-align:bottom;</p>
<div class="bottom">
  <img src="http://i.imgur.com/RECDV24.jpg" />
</div>

.imagebox {
    width:200px;
    float:left;
    height:88px;
    position:relative;
    background-color: #999;
}
.container {
    width:600px;
    height:176px;
    background-color: #666;
    position:relative;
    overflow:hidden;
}
.text {
    color: #000;
    font-size: 11px;
    font-family: robotomeduim, sans-serif;
    vertical-align:top;
    
}

.imagebox img{ display:block;}

<div class="container">
    <div class="imagebox">
        <img src="http://machdiamonds.com/n69xvs.jpg" /> <span class="text">Image title</span>
    </div>
    <div class="imagebox">
        <img src="http://machdiamonds.com/n69xvs.jpg" /> <span class="text">Image title</span>
    </div>
    <div class="imagebox">
        <img src="http://machdiamonds.com/n69xvs.jpg" /> <span class="text">Image title</span>
    </div>
    <div class="imagebox">
        <img src="http://machdiamonds.com/n69xvs.jpg" /> <span class="text">Image title</span>
    </div>
    <div class="imagebox">
        <img src="http://machdiamonds.com/n69xvs.jpg" /> <span class="text">Image title</span>
    </div>
    <div class="imagebox">
        <img src="http://machdiamonds.com/n69xvs.jpg" /> <span class="text">Image title</span>
    </div>
</div>