Yammer Override Styles, based on AngelListy Yammer

gistfile1.css

/* Yammer Override Styles, based on AngelListy Yammer */

#column-three,
.yj-follow-button-tiny,
#masthead-container,
.yj-chatmanager,
.zindex-t2,
#uni-messages,
.nav-networks-title {
	display:none !important;
}

.yj-masthead {
    display: none;
}

.two-column-layout .column-two-left {
	width:780px !important;
}

#uni-header-container #uni-header {
	margin-top:1px !important;
}

.yj-message-type-selector-tabs .yj-label {
  margin-right: 20px;
    }
.yj-avatar-thumb,
.yj-main-mugshot img,
.yj-avatar img,
.yj-reply-avatar img {
    border-radius:10%;
}

.yj-tab .yj-menu-icon, .yj-tab .yj-label {
	opacity:0.9;
}

.yj-tab .yj-selected .yj-menu-icon,
.yj-tab .yj-selected .yj-label,
.yj-tab .yj-item:hover .yj-menu-icon,
.yj-tab .yj-item:hover .yj-label {
	opacity:1;
}

.yj-file-attachment-list-item {
	width:49% !important;
}

.yj-thread-starter .yj-message-list-item--avatar {
    position: static;
    float: left;
    padding: 0 10px 0 0;
}

img[src$=".gif?tracking=false"] {
	display:block;
}

.yj-experiment-universal-publisher-ui .yj-group-label { font-size:12px !important; }

.yj-thread-starter .yj-message-body .yj-message {
    font-size:15px; 
    line-height: 1.4; 
    padding: 10px 0 0;
}

div.three-column-layout {background-image:none !important; }

.two-column-layout {background-image:none !important;}

.yj-nav-menu .nav-list-link {border: none !important; border-radius: 3px !important;}
.yj-nav-menu .yj-selected .nav-list-link {background: none !important;}
.yj-nav-menu .nav-list-link:hover {background: #efefef !important; color:#003f93 !important;}

.yj-thread-list-item {background-color:white !important; padding: 25px 50px 25px 25px !important; margin-bottom: 20px !important; border: none !important; border-radius: 0px !important; box-shadow: 0 1px 3px rgba(0,0,0,0.05)}

body, 
.page-content {background-color:#f2f3f5 !important;    font-family:'Helvetica Neue',Helvetica,Arial,sans-serif !important;
}
h1, h2, h3, h4, h5, h6, input, textarea, .yj-btn { font-family:'Helvetica Neue',Helvetica,Arial,sans-serif !important; }
#header-background {background-color: #f2f3f5; }
.yj-message-container a, .yj-attachments-render-container a {color: #3078ca !important;}
.yj-thread-replies-container a {color: #3078ca !important; }
.yj-actions, .yj-actions a , .yj-attributes a, .yj-attributes {font-weight: normal !important; color: #aaa !important;}
a.yj-publisher-watermark {color: #aaa !important;}
.yj-message-body { margin-bottom: 8px; }
.yj-thread-reply-list-item .yj-message-body { margin-bottom: 3px; }
.yj-thread-replies-pointer.yj-balloon {margin-top: 0; }
.yj-balloon {padding: 0; }
#feedToggle {margin-bottom: 10px !important; border-bottom-style: none !important;}

.yj-thread-starter-likes,
.yj-show-newer-replies,
.yj-unread-show,
.yj-show-older-replies,
.yj-thread-reply-container,
.yj-thread-reply-list-item {background-color:white !important; border-bottom: 1px dotted #dddddd !important; margin-bottom: 0px !important;}

.yj-likes-text {background-color:white !important;}

.yj-thread-reply-container {border-bottom:0 !important;}

.yj-publisher-textarea {border-color: #dddddd !important;}

.yj-selected a {background-color:whiteSmoke !important; border-bottom-color:whiteSmoke !important;}

.page-header {border:none !important;}

.yj-feed-filter .yj-click-menu-trigger {background-color:whiteSmoke !important;}

#uni-header-background {background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, white), color-stop(1, #eeeeee))!important;}

.segoe-font * {
    font-family:Helvetica,Arial,sans-serif !important;
    font-size:inherit;
}

.yj-group-callout.is-above-avatar {
    margin: 0;
    float: right;    
}

.yj-message-list-item--message-container {
    margin: 0 0 15px;
}