body {
   color: #ffffff;
   background-color: #000000;
   background-image: URL("img/back.png");
   background-repeat: repeat-y;
   background-position: center center;
   background-size: contain;
   overflow-x: hidden;
   -webkit-text-size-adjust: 100%;
   margin:0px;
   padding:0px;
   box-sizing : border-box;
}


p {
  text-align: left;
}



/*-------------------------sidebar‚ĚŽw’č*/
#sidebar {
  width: 200px;
  float: left;
  margin: 0;
  padding: 0;
}