.item{width:33%}.item.w2{width:50%}@media(max-width:1000px){.item{width:50%}}@media(min-width:2000px){.item{width:25%}}.animate-item-size-demo .item,.animate-item-size-demo .item-content{width:60px;height:60px}.animate-item-size-demo .item-content{background:#09d;transition:width .4s,height .4s}.animate-item-size-demo .item.is-expanded,.animate-item-size-demo .item.is-expanded .item-content{width:180px;height:120px}