JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    текст загрузится сразу, а картинка через 3 секунды
    <img src="http://alpatriott.ru/works/primer/images/romashki.jpg"></div>

CSS

img{
display:block;
width:300px;    
visibility:hidden;
-webkit-animation-name:'romashki';
-webkit-animation-duration:2000000s, 1s;
-webkit-animation-delay:3s;  
-moz-animation-name: romashki;
-moz-animation-duration:2000000s, 1s;
-moz-animation-delay:3s;    
}

@-webkit-keyframes 'romashki'{
    from{
    visibility:hidden;
    }
    
    to{
    visibility:visible;
    }
    }
@-moz-keyframes romashki{
    from{
    visibility:hidden;
    }
    
    to{
    visibility:visible;
    }
    }