.gotop {
  position: fixed;
  bottom: 15%;
  right:0%;
  text-align: center;
  cursor: pointer;
  z-index: 9999;
  border-radius: 50% 0 0 50%;
  transition: all .3s ease;
  width: 0;
  font-family:  "Microsoft JhengHei UI";
}

.row_fill{margin-left:20px; margin-top:20px; }
.row_fill_img{max-width: 106px;width: 80%;}

@media (min-width: 960px) {
  .gotop {
    position: fixed;
    bottom: 15%;
    right:0%;
    text-align: center;
    cursor: pointer;
    z-index: 9999;
    border-radius: 50% 0 0 50%;
    transition: all .3s ease;
    width: 0;
    font-family:  "Microsoft JhengHei UI";
  }
  .row_fill{margin-left:30px; margin-top:20px; }
  .row_fill_img{max-width: 55px;width: 40%;}
}

@media (max-width: 959px) and (min-width: 768px) {
  .gotop {
    position: fixed;
    bottom: 1%;
    right:2.5%;
    text-align: center;
    cursor: pointer;
    z-index: 9999;
    border-radius: 50% 0 0 50%;
    transition: all .3s ease;
    width: 0;
    font-family:  "Microsoft JhengHei UI";
  }
  .row_fill{margin-left:55px; margin-top:20px;}
  .row_fill_img{max-width: 55px;width: 40%;}
}

@media (max-width: 767px) and (min-width: 300px) {
  .gotop {
    position: fixed;
    bottom: 1%;
    right:0%;
    text-align: center;
    cursor: pointer;
    z-index: 9999;
    border-radius: 50% 0 0 50%;
    transition: all .3s ease;
    width: 0;
    font-family:  "Microsoft JhengHei UI";
  }
  .row_fill{margin-left:55px; margin-top:20px;}
  .row_fill_img{max-width: 106px;width: 30%;}
}