@charset "utf-8";
/* CSS Document */



/* Position */
#nach_oben {
  position: fixed;
  bottom: 30px;
  left: 50px; 
}

/* Aussehen des Buttons */
#nach_oben a {
 width:50px;
 height:50px;
 border-radius:50%;
 display: block;
 text-align: center;
 text-decoration: none;
 color: #333;
 font-size: 34px;
 font-weight:bold;
 background-color: #ccc;
 opacity:0.5;
 border:1px solid #333;
 padding-top:1px;
 box-sizing:border-box;
/* transition */
 -webkit-transition: 1s;
 -moz-transition: 1s;
 transition: 1s; }

/* Hover bei Mauskontakt */
#nach_oben a:hover {
 color: #000;
 background-color: orange;}