.btn_copy_font_size_var, 
.btn_copy_frame_var {
    background-position: bottom left;
    border-radius: 3px;
    background-size: 0% 100%;
    background-image: linear-gradient(var(--color-accent), var(--color-accent));
    background-repeat: no-repeat;
    transition: background-size 0.2s ease-in-out, color .3s ease-in-out;
}
.btn_copy_font_size_var:hover, 
.btn_copy_frame_var:hover {
    background-position: bottom left;
    background-size: 100% 100%;
  cursor: pointer;
}


.btn_copy_other_size_var,
.btn_copy_font_size_var,
.btn_copy_media_size_var {
    transition: all 0.2s;
    position: relative;
}


.btn_copy_other_size_var:hover,
.btn_copy_media_size_var:hover {
    background-color: var(--color-accent);
    cursor: pointer;
}


/*------------------------------
TOOLTIP
------------------------------*/
.btn_copy_other_size_var:after,
.btn_copy_font_size_var:after,
.btn_copy_media_size_var:after {
    opacity: 0;
    font-size: var(--font-body-defaut);
    font-weight: 400;
    visibility: hidden;
    position: absolute;
    content: attr(data-size-tooltip);
    padding: 6px 10px;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-18px);
    background: rgb(71, 71, 71);
    color: white;
    white-space: nowrap;
    z-index: 5;
    border-radius: 2px;
    transition: opacity 0.3s cubic-bezier(.64,.09,.08,1), transform 0.3s cubic-bezier(.64,.09,.08,1);
}
.btn_copy_other_size_var:hover::after,
.btn_copy_font_size_var:hover::after,
.btn_copy_media_size_var:hover::after {
    display: inline-block;
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-8px);
}