#td-backtop {
  position:fixed;right:0;top:55%;z-index:900;
  display:flex;flex-direction:column;align-items:center;gap:7px;
  padding:11px 8px;border:1px solid #ccd5e1;border-right:0;
  border-radius:10px 0 0 10px;background:#fff;color:#2447bd;
  box-shadow:-2px 2px 10px #14243e12;
  font:600 12px/1.2 system-ui,sans-serif;cursor:pointer;
}
#td-backtop[hidden] {display:none}
#td-backtop .td-backtop-arrow {font-size:21px;line-height:1}
#td-backtop .td-backtop-label {writing-mode:vertical-rl}
#td-backtop:hover {background:#eef3ff}
#td-backtop:focus-visible {
  outline:3px solid #2447bd;outline-offset:3px;
}
@media(max-width:760px) {
  #td-backtop {padding:10px 9px}
  #td-backtop .td-backtop-label {display:none}
}