// Font Size (rem)

rem-custom($size: 13)

font-size: $size + px
font-size: ($size / 10) + rem

// Inline Block // Set Parent

inline-block-custom-parent

font-size: 0
letter-spacing: -1em
word-spacing: -1em

// Set Child

inline-block-custom

display: inline-block
vertical-align: top
*display: inline
*zoom: 1
font-size: 1rem
letter-spacing: normal
word-spacing: normal