Declaration order

order.css

.selector { 
  /* Positioning */ 
  position: absolute; 
  z-index: 10; 
  top: 0; 
  right: 0; 
  bottom: 0; 
  left: 0;

  /* Display & Box Model */
  display: inline-block;
  overflow: hidden;
  box-sizing: border-box;
  width: 100px;
  height: 100px;
  padding: 10px;
  border: 10px solid #333;
  margin: 10px;

  /* Typography */
  font: normal 13px 'Helvetica Neue', sans-serif;
  line-height: 1.5;
  color: #333;
  text-align: center;

  /* Visual */
  background-color: #f5f5f5;
  border: 1px solid #e5e5e5;
  border-radius: 3px;

  /* Misc */
  opacity: 1;
}