css实现文字纵向排列

代码部分

animation-fill-mode : forwards ; -webkit-animation-fill-mode : forwards ;
.index_name{
  position: absolute;
  top:80rpx;
  // right:300rpx;
  z-index:200;
  writing-mode: vertical-lr;
  color:#ffffff;
  background: #24a597;
  padding: 30rpx 8rpx;
  animation: myfirst 5s;
  animation-fill-mode : forwards ; -webkit-animation-fill-mode : forwards ;
}
动画部分
@keyframes myfirst{
  0%   {right:0rpx;}  
  100% {right:300rpx; }
}