Cách làm trên Blogspot
1. Vào bảng điều khiển Blogger -> bố cục (Layout) -> Thêm tiện ích (Add a Widget) -> HTML/JavaSript
2. Dán code dưới đây vào tiện ích vừa thêm
<style>
#btrix_imgstack{
width:300px;margin:0 auto;margin-top:2%;
}
#btrix_imgstack a{
width:288px;
height:200px;
position:absolute;
display:block;
border:6px solid #f0f0f0;
border-radius:2px;
box-shadow:0 0 10px rgba(0,0,0,.3);
transition:margin .5s;
-webkit-transition:margin .5s;
}
#btrix_imgstack img{
width:288px;
max-height:100%;
}
#btrix_imgstack a:first-of-type{
margin-top:-5px;
margin-left:-20px;
transform:rotate(-3deg);
-webkit-transform:rotate(-3deg);
}
#btrix_imgstack a:nth-of-type(2){
margin-top:-5px;
margin-left:-10px;
z-index:-1;}
#btrix_imgstack a:last-of-type{
transform:rotate(3deg);
-webkit-transform:rotate(3deg);
z-index:-2;}
#btrix_imgstack:hover a:first-of-type{
margin-left:-310px;
margin-top:5px;}
#btrix_imgstack:hover a:nth-of-type(2){
margin-top:-5px;}
#btrix_imgstack:hover a:last-of-type{
margin-left:290px;
margin-top:5px;}
#btrix_imgstack a:first-of-type:hover,#btrix_imgstack a:last-of-type:hover{margin-top:-5px;}
#btrix_imgstack a:nth-of-type(2):hover{margin-top:-10px;}
</style>
<div id="btrix_imgstack">
<a href="http://goctraitim360.blogspot.com/">
<img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgzel4DV9vmqMCOb9CE4SU0VFqwjjlPh-YLakm-QdMWcGYlatZNWbADI6li7vXuPdC-Fr5hPVo0EAsIl1SYiFYBqsk_ijEDuyQdDTN7HLCHS3Znna10rOC9kacv6me3x441COiaznL03Sw/s1600/btrix_image1.jpg" alt />
</a>
<a href="http://anhdep3.blogspot.com/">
<img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9jBYm-sTrVCkJlkFjG8V23E6neqGOo29Vc2jrohEx_4CMdhqe_ifm71-nHfNMj1dL_FAFON3_prj3sl5S3O2OpI0-10x4KnhI0xiSlas2GbaY-cqClTuotFv7RHWWULNaSSk6AYfdxL4/s1600/btrix_image2.jpg" alt />
</a>
<a href="http://www.itviet360.com/p/dich-vu-seo-web-gia-re-giai-phap-tot.html">
<img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEireFHZfPFpp7xHMiKXEVm6WPkGUK1BZ9WDcbnyPQ8tcghxZj9Hv7LFuBo-rP5md63qxEXsGXJt87SENIr98IyaHxBcIfBUirKGmgWa6oV7cvSA9Tn2nCvr5kheOgL3REYzz-Dlr1HpwQM/s1600/btrix_image3.jpg" alt />
</a>
</div>