<ol>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
</ol>

ol
  counter-reset: li
  li
    position: relative
    padding-left: 45px
		margin-bottom: 12px
    &:before
      content: counter(li)
				counter-increment: li
				position: absolute
				left: 0
				top: 50%
				margin-top: -1em
				background: $color4
				color: #fff
				height: 1.8em
				width: 1.8em
				line-height: 1.8em
				text-align: center
				font-weight: bold
				border-radius: 2em