button.scroll-to-top {
    width: 64px;
    height: 64px;
    background: #cecece;
    transition: all 0.5s ease-in-out;
    border-radius: 50%;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

button.scroll-to-top::before {
    content: '^';
    display: block;
    font-weight: 900;
    font-size: 25px;
    color: white;
}