仅在最大化时显示SideBar浮动共享栏

Question

我已经为我的Blogger添加了一个共享栏的代码，它工作正常但是当窗口最小化时它仍然可见，我希望它只在窗口最大化时显示。我需要做些什么改变才能做到这一点？

<!--SideBar Floating Share Buttons Code Start-->
<style>
#pageshare {position:fixed; bottom:15%; left:50px; float:left; border: 1px solid #999999; border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;background-color:#f0f0f0;padding:0 0 2px 0;z-index:10;}

#pageshare .sbutton {float:left;clear:both;margin:5px 5px 0 5px;}
.fb_share_count_top {width:48px !important;}
.fb_share_count_top, .fb_share_count_inner {-moz-border-radius:3px;-webkit-border-radius:3px;}
.FBConnectButton_Small, .FBConnectButton_RTL_Small {width:49px !important; -moz-border-radius:3px;-webkit-border-radius:3px;}
.FBConnectButton_Small .FBConnectButton_Text {padding:2px 2px 3px !important;-moz-border-radius:3px;-webkit-border-radius:3px;font-size:8px;}
</style>
<br/><div id='pageshare' title='Share This With Your Friends'>
<div class='sbutton' id='gb'><script src='http://connect.facebook.net/en_US/all.js#xfbml=1'/><fb:like font='' layout='box_count' show_faces='false'/></div>
<br/><div class='sbutton' id='rt'><a class='twitter-share-button' data-count='vertical' href='http://twitter.com/share'>Tweet</a><script src='http://platform.twitter.com/widgets.js' type='text/javascript'/></div>
<br/><div class='sbutton' id='gplusone'><script src='https://apis.google.com/js/plusone.js' type='text/javascript'/><g:plusone size='tall'/></div></div>
@media screen and (max-width: 10px) {
#pageshare{
    display: none;
}
}