Update completion.ini

Author: Horsetopus

FlashDevelop/Bin/Debug/Tools/css/completion.ini

@@ -31,6 +31,9 @@ pseudo=link visited hover active focus target enabled disabled checked indetermi
 prefixes=-webkit- -moz- -ms- -o-
 
 [Properties]
+align-content=flex-start flex-end center space-between space-around stretch
+align-items=flex-start flex-end center baseline stretch
+align-self=auto flex-start flex-end center baseline stretch
 alignment-adjust=auto baseline before-edge text-before-edge middle central after-edge text-after-edge ideographic alphabetic hanging mathematical <percentage> <length>
 alignment-baseline=baseline use-script before-edge text-before-edge after-edge text-after-edge central middle ideographic alphabetic hanging mathematical
 animation=<animation-name> <animation-duration> <animation-timing-function> <animation-delay> <animation-iteration-count> <animation-direction>
@@ -101,6 +104,7 @@ font-style=normal italic oblique
 font-variant=normal small-caps
 font-weight=normal bold bolder lighter 100 200 300 400 500 600 700 800 900
 height=<length> <percentage> auto
+justify-content=flex-start flex-end center space-between space-around
 left=<length> <percentage> auto
 letter-spacing=normal <length>
 line-height=normal <number> <length> <percentage>
@@ -118,6 +122,7 @@ min-height=<length> <percentage>
 min-width=<length> <percentage>
 nbsp-mode=normal space
 opacity=<number>
+order=<integer>
 orphans=<integer>
 outline=<outline-color> <outline-style> <outline-width>
 outline-color=<color> invert