//...的动态效果
@keyframes dotdotdot {
33% {
transform: translateY(-2em);
}
66% {
transform: translateY(-1em);
}
}
.dot-animation {
display: inline-block;
height: 1em;
line-height: 1;
text-align: left;
vertical-align: -0.25ex;
overflow: hidden;
}
.dot-animation::before {
display: block;
content: '...\A..\A.';
white-space: pre-wrap;
animation: dotdotdot 1s infinite step-start both;
}