一个有趣的图标跳动CSS动画

@keyframes dialogOpen {
 0% {
 -webkit-transform: matrix3d(.7, 0, 0, 0, 0, .7, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.7, 0, 0, 0, 0, .7, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
opacity: 0 
} 
3.4% {
 -webkit-transform: matrix3d(.795, 0, 0, 0, 0, .822, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.795, 0, 0, 0, 0, .822, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
4.7% {
 -webkit-transform: matrix3d(.835, 0, 0, 0, 0, .88, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.835, 0, 0, 0, 0, .88, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
6.81% { 
-webkit-transform: matrix3d(.898, 0, 0, 0, 0, .968, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.898, 0, 0, 0, 0, .968, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
9.41% {
 -webkit-transform: matrix3d(.965, 0, 0, 0, 0, 1.05, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.965, 0, 0, 0, 0, 1.05, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
10.21% { 
-webkit-transform: matrix3d(.982, 0, 0, 0, 0, 1.068, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
 transform: matrix3d(.982, 0, 0, 0, 0, 1.068, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
13.61% { 
-webkit-transform: matrix3d(1.037, 0, 0, 0, 0, 1.1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.037, 0, 0, 0, 0, 1.1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
14.11% {
-webkit-transform: matrix3d(1.042, 0, 0, 0, 0, 1.099, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.042, 0, 0, 0, 0, 1.099, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
17.52% { 
-webkit-transform: matrix3d(1.062, 0, 0, 0, 0, 1.072, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.062, 0, 0, 0, 0, 1.072, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
18.72% { 
-webkit-transform: matrix3d(1.064, 0, 0, 0, 0, 1.056, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.064, 0, 0, 0, 0, 1.056, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)
 } 
21.32% {
 -webkit-transform: matrix3d(1.059, 0, 0, 0, 0, 1.021, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
 transform: matrix3d(1.059, 0, 0, 0, 0, 1.021, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)
 } 
24.32% { 
-webkit-transform: matrix3d(1.045, 0, 0, 0, 0, .988, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.045, 0, 0, 0, 0, .988, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
25.23% { 
-webkit-transform: matrix3d(1.04, 0, 0, 0, 0, .981, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.04, 0, 0, 0, 0, .981, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
29.03% {
 -webkit-transform: matrix3d(1.019, 0, 0, 0, 0, .969, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.019, 0, 0, 0, 0, .969, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
29.93% { 
-webkit-transform: matrix3d(1.014, 0, 0, 0, 0, .97, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.014, 0, 0, 0, 0, .97, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
35.54% {
 -webkit-transform: matrix3d(.994, 0, 0, 0, 0, .989, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.994, 0, 0, 0, 0, .989, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
36.74% {
 -webkit-transform: matrix3d(.991, 0, 0, 0, 0, .994, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.991, 0, 0, 0, 0, .994, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
41.04% { 
-webkit-transform: matrix3d(.988, 0, 0, 0, 0, 1.007, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
 transform: matrix3d(.988, 0, 0, 0, 0, 1.007, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
44.44% { 
-webkit-transform: matrix3d(.99, 0, 0, 0, 0, 1.01, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.99, 0, 0, 0, 0, 1.01, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
52.15% {
 -webkit-transform: matrix3d(.997, 0, 0, 0, 0, 1.002, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(.997, 0, 0, 0, 0, 1.002, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
opacity: 1 
} 
59.86% { 
-webkit-transform: matrix3d(1.002, 0, 0, 0, 0, .997, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); 
transform: matrix3d(1.002, 0, 0, 0, 0, .997, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
63.26% { 
-webkit-transform: matrix3d(1.002, 0, 0, 0, 0, .998, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
 transform: matrix3d(1.002, 0, 0, 0, 0, .998, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
75.28% {
 -webkit-transform: matrix3d(1, 0, 0, 0, 0, 1.001, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
 transform: matrix3d(1, 0, 0, 0, 0, 1.001, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) } 85.49%,
    90.69%,
    100% { 
-webkit-transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
 transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1) 
} 
100% {
 opacity: 1 
} 
}