.mailhub-acct { display:inline-block; font-size:10px; line-height:14px; padding:0 5px; margin-right:6px; border-radius:7px; color:#fff; background:#7a8691; vertical-align:1px; font-weight:600; }
.mailhub-QQ { background:#1e88e5; }
.mailhub-Gmail { background:#d93025; }
.mailhub-SUSTech { background:#00796b; }
.mailhub-BAQIS { background:#6a1b9a; }
.mailhub-QuafuTS { background:#ef6c00; }