inline:   center center
computed: 50% 50%
inline:   left bottom
computed: 0% 100%
inline:   center top
computed: 50% 0%
inline:   center top 20%
computed: 50% 20%
inline:   left 10px top 20%
computed: 10px 20%
inline:   10px top
computed: 10px 0%
inline:   right 10px bottom 20%
computed: calc(100% + (0 - 10px)) 80%
inline:   center center, left bottom
computed: 50% 50%, 0% 100%
inline:   left 10px bottom 20%, right 10px top 20%
computed: 10px 80%, calc(100% + (0 - 10px)) 20%