It is recommended to follow this order:
1, the layout positioning properties: the display/position/float/clear/visibility/overflow (recommended display the first writing, after all is related to mode)
2, and its properties: the width/height/margin/padding/border/background
3, text attributes :color/font/text-decoration/text-align/vertical-align/white-space/break-word
4, other attributes (CSS3) : Content /cursor/border-radius/box-shadow/text-shadow/background: Linear-gradient…
