css中的角度单位
1、deg
度(Degress)。一个圆共360度
90deg = 100grad = 0.25turn ≈ 1.570796326794897rad
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <style> .test{ height:100px;background:#eee; -moz-transform:rotate(2deg); -webkit-transform:rotate(2deg); -o-transform:rotate(2deg); -ms-transform:rotate(2deg); transform:rotate(2deg); } </style> </head> <body> <div>transform:rotate(2deg);</div> </body> </html>
2、grad
梯度(Gradians)。一个圆共400梯度
90deg = 100grad = 0.25turn ≈ 1.570796326794897rad
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <style> .test{ height:100px;background:#eee; -moz-transform:rotate(2grad); -webkit-transform:rotate(2grad); -o-transform:rotate(2grad); -ms-transform:rotate(2grad); transform:rotate(2grad); } </style> </head> <body> <div>transform:rotate(2grad);</div> </body> </html>
3、rad
弧度(Radians)。一个圆共2π弧度
90deg = 100grad = 0.25turn ≈ 1.570796326794897rad
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <style> .test{ height:100px;background:#eee; -moz-transform:rotate(2rad); -webkit-transform:rotate(2rad); -o-transform:rotate(2rad); -ms-transform:rotate(2rad); transform:rotate(2rad); } </style> </head> <body> <div>transform:rotate(2rad);</div> </body> </html>
4、turn
转、圈(Turns)。一个圆共1圈
90deg = 100grad = 0.25turn ≈ 1.570796326794897rad
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <style> .test{ height:100px;background:#eee; -webkit-transform:rotate(.5turn); -o-transform:rotate(.5turn); -ms-transform:rotate(.5turn); transform:rotate(.5turn); } </style> </head> <body> <div>transform:rotate(.5turn);</div> </body> </html>
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