you can’t randomized image with html , you have to use java script or css5 try this
window.onload = choosePic;
var myPix = new Array("images/lion.jpg","images/tiger.jpg","images/bear.jpg");
function choosePic() {
randomNum = Math.floor((Math.random() * myPix.length));
document.getElementById("myPicture").src = myPix[randomNum];
}
solved Displaying random images on websites [closed]