a:hover {
text-shadow: 5px 5px 5px blue;
}
body{
    background: url(https://images2018.cnblogs.com/blog/989861/201807/989861-20180713112729365-411369761.jpg);
    height: 100%;
    width: 100%;
    background-size:100%;
}
#navigator {
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}
#main {
   opacity:0.95;
}
#tbCommentBody {
  width:450px;
  height:450px;
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}