.shrink-add, .grow-add {
-webkit-transition:all ease 2.5s;
-moz-transition:all ease 2.5s;
-o-transition:all ease 2.5s;
transition:all ease 2.5s;
}
.shrink,
.shrink-add.shrink-add-active {
width:100px;
}
.start-class,
.grow,
.grow-add.grow-add-active {
width:400px;
}