JSFiddle - React, Tailwind, and code Playground
HTML
<div class="wrap">
<img src="http://ogorod-moscow.narod.ru/listvennie/allei.jpg" alt="" id="img-1" class="img">
<img src="https://terri0729.files.wordpress.com/2012/07/google-a-mc-random-261.jpg" alt="" id="img-2" class="img img-2">
</div>
CSS
.wrap{
width: 400px;
height: 400px;
}
.img{
width: 100%;
}
.img-2{
display: none;
}
JavaScript
var firstImg = $('#img-1'),
secondImg = $('#img-2');
setTimeout(function(){
firstImg.fadeOut(1000);
secondImg.delay(1100).fadeIn(1000);
}, 3000)