body {margin:0;}

.navbar {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  width: 100%;
}






.navbar a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
 
}
*/ height: 30px;*/

.navbar a:hover {
  background: #7CFC00;
  color: black;
}

.main {
  padding: 16px;
  margin-top: 30px;
  height: 1500px;

}

.navbar_b {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  bottom: 0;
  width: 100%;
  hight : 20px;
   text-align: right;
  font-style: italic;
  font-size: 10px;
  color: #f2f2f2;
  padding: 6px 0px 6px 0px;



}