просто подгружать 4 иконки в css или прописать в коде это не убыстрение, а замедление
Объедините 4 картинки в 1 это убыстрение, это CSS спрайты.
Подробности здесь: habrahabr.ru/post/159027/
One day, a curious boy named Sam moved into the house with his family. As he explored the property, he noticed a rusty, old key lying under a bush. Sam picked it up, wondering what it might unlock....
<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->I think this is an informative post and it is very useful and knowledgeable. therefore, I would like to thank you for the...
One day, a curious boy named Sam moved into the house with his family. As he explored the property, he noticed a rusty, old key lying under a bush. Sam picked it up, wondering what it might unlock....
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