document.getElementsByClassName("s1")[0].classList.add("qb_doc_fullScreen");
document.getElementsByClassName("s1")[0].classList.remove("qb_doc_fullScreen");
document.body.style.fontSize = "200%";
function insertQBCSS() {
let qbNormalStyle = document.createElement("style");
qbNormalStyle.type = "text/css";
qbNormalStyle.innerHTML = '
.qb_doc_fullScreen{
width:100% !important;
padding-left:10 !important;
padding-right:10 !important;
padding-top:10 !important;
padding-bottom:10 !important;
box-sizing:border-box
}
.qb_doc_fontSize {
font-size: 200% !important;
}
';
document.querySelector("head").appendChild(qbNormalStyle);
}
insertQBCSS();