all html attributes

html.txt

accept,accept-charset,accesskey,action,align,alt,async,autocomplete,autofocus,autoplay,autosave,bgcolor,border,buffered,challenge,charset,checked,cite,class,code,codebase,color,cols,colspan,content,contenteditable,contextmenu,controls,coords,data,datetime,default,defer,dir,dirname,disabled,download,draggable,dropzone,enctype,for,form,formaction,headers,height,hidden,high,href,hreflang,http-equiv,icon,id,ismap,itemprop,keytype,kind,label,lang,language,list,loop,low,manifest,max,maxlength,media,method,min,multiple,name,novalidate,open,optimum,pattern,ping,placeholder,poster,preload,pubdate,radiogroup,readonly,rel,required,reversed,rows,rowspan,sandbox,scope,scoped,seamless,selected,shape,size,sizes,span,spellcheck,src,srcdoc,srclang,srcset,start,step,style,summary,tabindex,target,title,type,usemap,value,width,wrap