body

        #myBtn {
            display: none;
            position: fixed;
            bottom: 20px;
            right: 30px;
            z-index: 99;
            border: none;
            outline: none;
            background-color: #f34c20;
            color: #4f2170;
            cursor: pointer;
            padding: 15px;
            border-radius: 10px;
          }

            #myBtn:hover {
                /*background-color: #555;*/
                background-color: #4f2170;
                color: white;
            }