style.css

footer{
    display: none !important;
}

td img{
  background-image:
    linear-gradient(45deg, lightgrey 25%, transparent 25%), 
    linear-gradient(135deg, lightgrey 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, lightgrey 75%),
    linear-gradient(135deg, transparent 75%, lightgrey 75%);
  
  background-size: 20px 20px;
  background-position: 0 0, 10px 0, 10px -10px, 0px 10px;
}

#toTopBtn {
	position: fixed;
        bottom: 10px;
        float: right;
        right: 18.5%;
        left: 77.25%;
	height: 30px;
        max-width: 100px;
        width: 100%;
        font-size: 12px;
        border-color: rgba(217,24,120, .5);
        background-color: rgba(35,153,249,.5);
        padding: .5px;
        border-radius: 4px;
   }