英文關鍵字
abstract
animated
animation
art
attention
background
black
caution
circle
color
concept
curve
danger
design
effect
escher
geometric
graphic
hazard
hypnotic
illusion
impossible
line
loop
looping
movement
optical
pattern
psychedelic
radial
round
safety
seamless
security
shape
spin
spiral
strip
stripe
swirl
texture
tunnel
video
visual
warning
wave
whirlpool
yellow