求帮忙看一下，为什么文字没有动画效果啊？
.slider .main .main-i{
opacity: 0;
position: absolute;
right: 50%;
top: 0;
-webkit-transition:all .5s;
}
.slider .mian .main-i h2{
margin-right: 45px;
}
.slider .mian .main-i h3{
margin-right: -45px;
}
.slider .mian .main-i h2,
.slider .mian .main-i h3{
-webkit-transition:all .8s 1s;
}
.slider .main .main-i_active{
right: 0;
opacity: 1;
}
.slider .main .main-i_active h2,
.slider .main .main-i_active h3{
margin-right: 0px;
}
