.fix-btn-box {
    position: fixed;
    z-index: 203;
    top: 0;
    right: calc(5% + 180px);
    transition: var(--TransitionDefault);
    height: var(--NaviHeight);
    display: flex;
    align-items: center;
    justify-content: center;
}

.fix-btn a {
    border: var(--BorderPrimary);
    background: var(--BtnOutlineBg);
    color: var(--BtnOutlineTextColor);
    font-weight: 400;
    font-size: var(--FontSizeNavi);
    padding: 8px 10px;
    width: var(--BtnWidth);
    height: var(--BtnHeight);
    text-align: center;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fix-btn-box.is-up .fix-btn a {
    border: var(--BorderPrimary);
    background: var(--BtnOutlineBg);
    color: var(--BtnOutlineTextColor);
}

.fix-btn-box.is-up {
    transition: var(--TransitionDefault);
}

.fix-btn img {
    width: 27px;
    margin-right: 10px;
}


@media (hover: hover) and (pointer: fine),
(min-width: 1200px) {

    .fix-btn-box.is-up a:hover,
    .fix-btn a:hover {
        color: var(--BtnPrimaryHoverTextColor);
        background: var(--BtnPrimaryHoverBg);
    }

    .fix-btn a:hover img {
        filter: invert(1) brightness(3);
    }

}

@media (max-width: 650px) {

    .fix-btn-box,
    .fix-btn-box.is-up {
        right: 0;
        width: 100%;
        bottom: 0;
        top: unset;
    }

    .fix-btn-box .RWDbase,
    .fix-btn {
        width: 100%;
    }

    .fix-btn-box {
        height: auto;
    }

    .fix-btn-box .fix-btn a,
    .fix-btn-box.is-up .fix-btn a {
        background: var(--BtnPrimaryBg);
        border: 0;
        color: var(--BtnPrimaryTextColor);
    }
}