.scroll_top {
    position: fixed;
    bottom: 20px;
    display: block;
    width: 50px;
    height: 50px;
    right: 20px;
    background-color: #43D803;
	color: #FFF;
    text-align: center;
    border-radius: 50%;
    font-size: 30px;
    line-height: 48px;
    transition: all 0.25s linear;
    cursor: pointer;
    z-index: 999;
}