/* pinning the footer to the bottom of the page */
html, body {
    height: 100%;
}

.lib-wrapper {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.lib-main {
    flex: 1 1 auto;
}
/* pinning the footer to the bottom of the page END*/

.lib-message-control {
    font-weight: bold;
    min-height: 30px;
}

.lib-cursor-pointer {
    cursor: pointer;
}

.lib-text-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* button up */
.lib-btn-up {
    position: fixed;
    background-color: #ffc107;
    left: 20px;
    bottom: 0;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 40px;
    transition: opacity 0.3s ease-in-out;
    z-index: 1;
    opacity: 1;
}

.lib-btn-up::before {
    content: "";
    width: 40px;
    height: 40px;
    background-size: 100% 100%;
    background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='000000FF' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M7.646 4.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1-.708.708L8 5.707l-5.646 5.647a.5.5 0 0 1-.708-.708l6-6z'/%3E%3C/svg%3E") no-repeat center center;
}

.lib-btn-up_hide {
    display: none;
}

.lib-btn-up_hiding {
    opacity: 0;
}

@media (hover: hover) and (pointer: fine) {
    .lib-btn-up:hover {
        background-color: #ffea07;
    }
}
/* button up END */