.back_to_top_wrapper {
    position: fixed;
    right: 50px;
    height: 44px;
    width: 44px;
    cursor: pointer;
    border-radius: 50%;
    z-index: 99;
    bottom: 50px;
}

.back_to_top_btn {
    display: inline-block;
    width: 44px;
    height: 44px;
    line-height: 44px;
    text-align: center;
    background-color: #1c1c1c;
    box-shadow: 0 8px 16px #03041c4d;
    color: #fff;
    border-radius: 50%;
    transition: all 0.2s ease-in-out;
    outline: none;
    border: none;
}

.back_to_top_btn svg {
    transform: translateY(-2px);
}