<div class="block">
  NG
  <div class="image">
    <img class="NG_image" src="https://www.7-16.co.jp/wp-content/uploads/2018/11/sample.jpg">
  </div>
  <div class="imgBottom"></div>
</div>
<div class="block">
  OK
  <div class="image">
    <img class="OK_image" src="https://www.7-16.co.jp/wp-content/uploads/2018/11/sample.jpg">
  </div>
  <div class="imgBottom"></div>
</div>
.image{
  vertical-align:bottom;
}
.OK_image{
  vertical-align:bottom;
}

body{
  margin:0;
}
.imgBottom{
  height:50px;
  background-color:#666;
}
.block{
  margin-bottom:50px;
}

External CSS

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External JavaScript

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