:root{--attachment-img:url('/file/attachment.png');--spoiler-img:url('/file/spoiler.png');--audio-img:url('/file/audio.png');--captcha-grid-size:1fr 1fr 1fr 1fr;--thumbnail-size:250px;--captcha-w:150px;--captcha-h:150px;--bypass-height:330px}img{width:var(--captcha-w);height:var(--captcha-h);image-rendering:crisp-edges;margin:0 auto}input{position:fixed;left:-3px;bottom:0;opacity:.9;border:none;background:0 0;font-size:18px;cursor:pointer;text-shadow:#000 0 0 1px,#000 0 0 1px,#000 0 0 1px,#000 0 0 1px,#000 0 0 1px,#000 0 0 1px;color:#fff}body{font-family:arial,helvetica,sans-serif;font-size:10pt;margin:0;padding:0}.flexcenter{display:flex;flex-direction:column;align-items:center}