Auto animation

1. apply/change any value for all element class 

.main-slider {

1. transition: all 1s ease 0s;

}

2. width change apply

.main-slider {

1. transition: width 1s ease 0s;

}

3. margin change apply

.main-slider {

1. transition: margin 1s ease 0s;

}

4. left change apply

.main-slider {

1. transition: left 1s ease 0s;

}