userscript.css

/* scrollbars */
body::-webkit-scrollbar, .lQ::-webkit-scrollbar { display:none; }

/* header */
.bl { margin-left: -6px !important; max-width: 150px; overflow: hidden; white-space: nowrap; background: -webkit-linear-gradient(left, #fff 120px, transparent); -webkit-background-clip: text !important; -webkit-text-fill-color: transparent; }
.f9, .qy { background: -webkit-linear-gradient(left, #212121 120px, transparent); }
.bS { margin-left: 20px !important; }
.at { background: none !important; }
.at::before { box-shadow: none !important; }
.hn::after { content: ""; position: absolute; top: 0px; left: 0px; right: 0px; bottom: 0px; background: linear-gradient(to bottom, #fff, transparent); opacity: 0.15; z-index: -25; }

/* content */
.bz { width: auto; margin-left: 30px; margin-right: 30px; }
.M .bz { margin-left: 220px; margin-right: 30px; }
.eo { font-weight: 400 !important; }
.r, .I { background: none !important; box-shadow: none !important; }
.aF, .as { color: #888 !important; }

/* sidebar */
.M .fv { width: 196px !important; }
.M .lQ { line-height: 36px !important; width: 180px !important; }
.M .op, .M .sM { padding-left: 20px !important; }

/* compose button */
.iP { top: 0; right: 16px !important; padding: 0 !important; z-index: 1000 !important; }
.iP > * { display: none; visibility: hidden !important; padding: 0 !important; }
.iP .a6 { opacity: 1 !important; visibility: visible !important; transform: rotate(0) !important; }
.gb_ga .a6 { filter: invert(70%); } /* js appendChild */

/* compose window */
.l6 .lK { margin: 0 60px !important; }
.l6 .be.k { width: auto !important; }