.gototop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  -webkit-transition: 0.5s;
  -o-transition: 0.5s;
  transition: 0.5s;
}
.gototop.active {
  opacity: 1;
  visibility: visible;
}
.gototop a {
  width: 50px;
  height: 50px;
  display: table;
  background: rgba(235, 0, 40, 0.5);
    color: #fff;
  text-align: center;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  -ms-border-radius: 4px;
  border-radius: 42px;
}
.gototop a i {
  height: 50px;
  display: table-cell;
  vertical-align: middle;
}
.gototop a:hover, .gototop a:active, .gototop a:focus {
  text-decoration: none;
  outline: none;
}

 @media (max-width: 768px) { 
            
         .gototop a {
  width: 55px;
  height: 55px;
  display: table;
  background: rgba(235, 0, 40, 0.5);
  color: #fff;
  text-align: center;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  -ms-border-radius: 4px;
  border-radius: 45px;
    border: 1.5px solid #fff;  }   
       
}   


        @media (max-width: 430px) { 
            
         .gototop a {
  width: 55px;
  height: 55px;
  display: table;
  background: rgba(235, 0, 40, 0.5);
  color: #fff;
  text-align: center;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  -ms-border-radius: 4px;
  border-radius: 45px;
    border: 1.5px solid #fff;         
}   
            
            }