Logo Image Replacement

index.html

<h1 class="ir-logo">
	<span>My Site</span>
</h1>

site.less

h1.ir-logo {
	width: 200px; 
	height: 50px;
	background: url("images/logo.png") no-repeat;
	
  span {
  	display: block;
  	width: 0;
  	height: 0;
  	overflow: hidden;
  }
}