@charset "UTF-8";
body {
    font-weight: normal;
}
 .leftlayout {
   text-align: left;
 }
  
 .centerlayout {
   text-align: center;
 }
  
 .righlayout {
   text-align: right;
 }

 img {
   display: block;
 }
 .leftposition {
   margin-left: 0;
   margin-right: auto;
   width: 500px;
   height: 200px;
 }
  
 .centerposition {
   margin-left: auto;
   margin-right: auto;
   width: 500px;
   height: 200px;
 }
  
 .rightposition {
   margin-left: auto;
   margin-right: 0;
   width: 500px;
   height: 200px;
 }

 .class1 {
   position: relative;
   margin: 50px;
   width: 500px;
   height: 500px;
   background-color: gray;
 }
  
 .position {
   position: absolute;
   top: 300px;
   left: 100px;
   width: 250px;
   height: 100px;
 }