How to center an image horizontally and align it to the bottom of the container?

Question

How can I center an image horizontally and aligned to the bottom of the container at the same time?

I have been able to center the image horizontally by its self. I hav

Answer 1

This also works (taken a hint from this question)

.image_block {
  height: 175px;
  width:175px;
  position:relative;
}
.image_block a img{
 margin:auto; /* Required */
 position:absolute; /* Required */
 bottom:0; /* Aligns at the bottom */
 left:0;right:0; /* Aligns horizontal center */
 max-height:100%; /* images bigger than 175 px  */
 max-width:100%;  /* will be shrinked to size */ 
}