My current Twitter userstyle

gistfile1.css

div.promoted-tweet { display: none }
.content-main { float: none; width: auto; }
.wtf-module, .mini-profile.module, .trends.module, .wtf-module.has-content, .profile-header, .module.site-footer { display: none }
.tweet-actions, .expand-stream-item { visibility: hidden }
.stream-item:hover .tweet-actions, .stream-item:active .tweet-actions, .selected-stream-item .tweet-actions, .stream-item:hover .expand-stream-item, .stream-item:active .expand-stream-item, .selected-stream-item .expand-stream-item { visibility: visible }
.wrapper { width: auto; padding-left: 0; padding-right: 0; }
.profile-card.profile-header { float: none; margin-left: auto; margin-right: auto; }
div.dashboard { clear: both; float: none; width: auto; position: absolute; }
.js-nav-links { display: block; height: 20px; background: #fff; }
.js-nav-links:before { font-size: 1.1em; font-weight: bold; margin: 0.5em; margin-bottom: 1em; padding-bottom: 1em; display: block; line-height: 1em; content: "Page navigation >"; }
.js-nav-links li { display: none }
.js-nav-links:hover, .js-nav-links:active { height: auto }
.js-nav-links:hover li, .js-nav-links:active li { display: block }
.header-inner { text-align: center }