const char HTTP_HEADER1[] PROGMEM =
  "<!DOCTYPE html><html lang=\"%s\" class=\"\">"
  "<head>"
  "<meta charset='utf-8'>"
  "<meta name=\"viewport\" content=\"width=device-width,initial-scale=1,user-scalable=no\"/>"
  "<link rel=\"icon\" href=\"data:image/x-icon;base64,AAABAAEAEBACAAEAAQCwAAAAFgAAACgAAAAQAAAAIAAAAAEAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA////AP5/b+H6X2/h8k9v4eZnb+Hud2/h7ndv4e53b+FmZm/hMkxv4ZgZb+HOc2/h5+dv4fPPb+H5n2/h/D9v4f5/b+EAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4E\">"
  "<title>%s - %s</title>"

  "<script>"
  "var x=null,lt,to,tp,pc='';"            // x=null allow for abortion

// Following bytes saving ES6 syntax fails on old browsers like IE 11 - https://kangax.github.io/compat-table/es6/
  "eb=s=>document.getElementById(s);"     // Alias to save code space
  "qs=s=>document.querySelector(s);"      // Alias to save code space
  "sp=i=>eb(i).type=(eb(i).type==='text'?'password':'text');"  // Toggle password visibility
  "wl=f=>window.addEventListener('load',f);" // Execute multiple window.onload
  ;
