gistfile1.txt

/*TOPに戻るボタンの設置*/
#page_top a::before{
   font-family: 'Font Awesome 5 Free';
   font-weight: 900;
   content: '\f139';
   font-size: 40px;
   color: #3f98ef;
   position: fixed;
   width: 25px;
   height: 25px;
   bottom: 20px;
   right: 0px;
   left: 0px;
   margin: auto;
   text-align: center;
}
#page_top a::after{
   font-size: 13px;
   color: #fff;
   position: fixed;
   bottom: 20px;
   right: 0px;
   left: 0px;
   margin: auto;
   text-align: center;
   color: #3f98ef;
}