.appback{z-index:11;color:#14201e;cursor:pointer;background:#fff;border:1px solid #c7c7bd;border-radius:999px;margin:10px 0 0 max(12px,50vw - 590px);padding:9px 14px;font-weight:900;position:sticky;top:72px;box-shadow:0 5px 15px #17201e12}@media (width<=590px){.appback{margin-left:12px;top:64px}}