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河道上的噗好讀

.plurk{
filter:alpha(opacity=80); (將浪上的噗隱藏起來，透明度設10，讓它若隱若現)
-moz-opacity:0.8;
opacity:0.8;
zoom:1;}

.plurk:hover{
filter:alpha(opacity=100); (滑鼠移過去，浪上的噗就會清楚顯現，設100,1,1)
-moz-opacity:1;
opacity:1;
zoom:1;}

/*隱藏已經消音的噗***/
.muted
{
filter:alpha(opacity=50);
-moz-opacity:0.5;
opacity:0.5;
zoom:1;
}