ackToTopButtonSvg.style.margin = "auto";
                backToTopButtonSvg.style.justifyContent = "center";
                backToTopButtonSvg.style.width = obj.svgWidth;
                backToTopButtonSvg.style.height = obj.svgHeight;
                backToTopButton.appendChild(backToTopButtonSvg);
                backToTopButtonImg = document.querySelector(".back-to-top-button-img");
                backToTopButtonImg.style.fill = obj.selectedIconColor;
                backToTopButtonSvg.appendChild(back