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<style>.material-scrolltop {  
  display: block;  
  position: fixed;  
  width: 0;  
  height: 0;  
  bottom: 23px;  
  right: 23px;  
  padding: 0;  
  overflow: hidden;  
  outline: none;  
  border: none;  
  border-radius: 2px;  
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.5);  
  cursor: hand;  
  border-radius: 50%;  
  background: #4caf50;  
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);  
  -webkit-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);  
  -ms-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);  
  -moz-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);  
  -o-transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);  
  transition: all 0.3s cubic-bezier(0.25, 0.25, 0, 1);  
}  

.material-scrolltop:hover {  
  background-color: #4caf50;  
  text-decoration: none;  
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.5), 0 3px 15px rgba(0, 0, 0, 0.5);  
}  

.material-scrolltop::before {  
  position: absolute;  
  top: 50%;  
  left: 50%;  
  -webkit-transform: translate(-50%, -50%);  
  -ms-transform: translate(-50%, -50%);  
  -moz-transform: translate(-50%, -50%);  
  -o-transform: translate(-50%, -50%);  
  transform: translate(-50%, -50%);  
  content: "";  
  width: 0;  
  border-radius: 100%;  
  background: #66bb6a;  
}  

.material-scrolltop:active::before {  
  width: 120%;  
  padding-top: 120%;  
  -webkit-transition: all 0.2s ease-out;  
  -ms-transition: all 0.2s ease-out;  
  -moz-transition: all 0.2s ease-out;  
  -o-transition: all 0.2s ease-out;  
  transition: all 0.2s ease-out;  
}  

.material-scrolltop.reveal {  
  width: 56px;  
  height: 56px;  
}  

.material-scrolltop span {  
  display: block;  
  font-size: 25px;  
  color: #fff;  
}  

.material-scrolltop,  
.material-scrolltop::before {  
  background-image: url(http://uway.ucoz.com/materials/1/11/top-arrow.svg);  
  background-position: center 50%;  
  background-repeat: no-repeat;  
}</style>

<script src="http://uway.ucoz.com/materials/1/11/material-scrolltop.js"></script>  
  <button class="material-scrolltop" type="button"></button>  
  <script>  
  $(document).ready(function() {  
  $('body').materialScrollTop({  
  revealElement: 'header',  
  revealPosition: 'bottom',  
  onScrollEnd: function() {  
  console.log('Scrolling End');  
  }  
  });  
  });  
  </script>