Tool check Responsive cho website

[pre]<script>
//<![CDATA[
(function(){
const URL_RE=/\bhttps?:\/\/[^\s<>"']+/gi, IMG_EXT=/\.(jpe?g|png|gif|webp|avif|bmp|svg)(\?|#|$)/i;

function resolveHref(h){
try{
const u=new URL(h,location.href);
if(u.hostname==='www.blogger.com'&&u.pathname.includes('/redirect')){
const real=u.searchParams.get('url'); if(real) return decodeURIComponent(real);
}
return u.href;
}catch(_){return h||''}
}

function makeImg(src,alt){
const img=document.createElement('img');
img.src=src; img.alt=alt||''; img.loading='lazy'; img.decoding='async';
img.style.maxWidth='100%'; img.style.display='block'; img.style.marginTop='8px';
img.onerror=()=>img.remove();
return img;
}

function linkifyAndReplace(container){
const walker=document.createTreeWalker(container,NodeFilter.SHOW_TEXT,null);
const texts=[]; while(walker.nextNode()) texts.push(walker.currentNode);
texts.forEach(t=>{
if(!t.nodeValue||!URL_RE.test(t.nodeValue)) return;
URL_RE.lastIndex=0;
const frag=document.createDocumentFragment();
let s=t.nodeValue, m, i=0;
while((m=URL_RE.exec(s))){
if(m.index>i) frag.appendChild(document.createTextNode(s.slice(i,m.index)));
const url=m[0], img=makeImg(url,'');
frag.appendChild(img); i=m.index+url.length;
}
if(i<s.length) frag.appendChild(document.createTextNode(s.slice(i)));
t.parentNode.replaceChild(frag,t);
});
}

function replaceAnchors(area){
area.querySelectorAll('a[href]').forEach(a=>{
if(a.dataset.imgInjected==='1') return;
const src=resolveHref(a.getAttribute('href'));
const img=makeImg(src,a.textContent.trim());
a.insertAdjacentElement('afterend',img);
a.remove();
});
}

function process(root){
root.querySelectorAll('.comment-content').forEach(area=>{
linkifyAndReplace(area);
replaceAnchors(area);
});
}

function boot(){
process(document);
const mo=new MutationObserver(ms=>{
ms.forEach(m=>{
m.addedNodes&&m.addedNodes.forEach(n=>{
if(!(n instanceof Element)) return;
if(n.matches?.('.comment-content,#comments,.comments,#comment-holder')) process(n);
else {
const found=n.querySelectorAll?.('.comment-content');
if(found&&found.length) process(n);
}
});
});
});
mo.observe(document.body,{childList:true,subtree:true});
}

if(document.readyState==='complete') boot();
else window.addEventListener('load',boot);
})();
//]]>
</script>[/pre]
Thay class, id cho đúng nha