:root{--bg:none;--txt:none;--time:0s;--transition1:background-color var(--time);--transition2:color var(--time)}body{background-color:var(--bg);transition:var(--transition1);font-family:Noto Sans JP,Hiragino Kaku Gothic Pro,MS Gothic,sans-serif;overflow:hidden}#offline{color:var(--txt);display:none}#center{-webkit-user-select:none;user-select:none;-webkit-writing-mode:vertical-rl;-moz-writing-mode:vertical-rl;-ms-writing-mode:vertical-rl;writing-mode:vertical-rl;text-align:center;height:60vh;color:var(--txt);transition:var(--transition2);word-break:keep-all;font-weight:500;line-height:2.5;position:absolute;top:50%;left:50%;translate:-50% -50%}#user-input{-webkit-user-select:none;user-select:none;text-align:center;letter-spacing:-2px;word-break:keep-all;min-width:80vw;color:var(--txt);transition:var(--transition2);font-weight:500;position:absolute;top:50%;left:50%;translate:-50% -50%}