Question How to make the user info text one line only ?

You can try following message_user_info.css

Mã:

.messageUserInfo
{
    @property "messageUserInfo";
    float: left;
    width: 124px;
    @property "/messageUserInfo";
}
 
    .messageUserBlock
    {
        @property "messageUserBlock";
        background: @primaryLighterStill url('@imagePath/xenforo/gradients/tab-selected-light.png') repeat-x bottom;
        border: 1px solid @primaryLighterStill;
        border-radius: 5px;
        @property "/messageUserBlock";
       
        position: relative;
    }
       
        .messageUserBlock div.avatarHolder
        {
            @property "messageAvatarHolder";
            background-color: @primaryLightest;
            padding: 10px;
            border-radius: 4px;
            @property "/messageAvatarHolder";   
        }
       
            .messageUserBlock div.avatarHolder a
            {
                display: block;
            }
           
        /*.messageUserBlock .ipLink
        {
            display: block;
            float: right;
            font-size: 8px;
            width: 12px;
            height: 12px;
            line-height: 12px;
            text-align: center;
            background-color: @primaryLighter;
            border-radius: 3px;
        }
       
            .messageUserBlock .ipLink:hover
            {
                background-color: @primaryLightest;
                text-decoration: none;
            }*/
           
        .messageUserBlock h3.userText
        {
            @property "messageUserText";
            padding: 6px;
            @property "/messageUserText";
        }
   
        .messageUserBlock a.username
        {
            @property "messageUsername";
            font-weight: bold;
            display: block;
            overflow: hidden;
            line-height: 16px;
            @property "/messageUsername";
           
        }
       
        .messageUserBlock .userTitle
        {
            @property "messageUserTitle";
            font-size: 11px;
            display: block;
            @property "/messageUserTitle";
        }
       
        .messageUserBlock .extraUserInfo
        {
            @property "messageExtraUserInfo";
            font-size: 11px;
            background-color: @primaryLightest;
            padding: 4px 6px;
            border-radius: 4px;
            @property "/messageExtraUserInfo";
        }
       
            .messageUserBlock .extraUserInfo dl
            {
                margin: 2px 0;
            }
           
                .messageUserBlock .extraUserInfo dt
                {
                    font-size: 9px;
                    display: block;
                }
               
            .messageUserBlock .extraUserInfo img
            {
                max-width: 100%;
            }
       
        .messageUserBlock .arrow
        {
            position: absolute;
            top: 10px;
            right: -10px;
           
            display: block;
            width: 0px;
            height: 0px;
            line-height: 0px;
           
            border: 10px solid transparent;
            border-left-color: @messageUserBlock.border-color;
            border-right: none;
           
            /* Hide from IE6 */
            _display: none;
        }
       
            .messageUserBlock .arrow span
            {
                position: absolute;
                top: -10px;
                left: -11px;
               
                display: block;
                width: 0px;
                height: 0px;
                line-height: 0px;
               
                border: 10px solid transparent;
                border-left-color: @messageAvatarHolder.background-color;
                border-right: none;
            }