#c2-to-top-button {
    position: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.2s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    padding: 0;
    outline: none;
}

#c2-to-top-button:focus {
    outline: 2px solid #0073aa;
    outline-offset: 2px;
}

#c2-to-top-button.c2-to-top-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#c2-to-top-button svg {
    width: 50%;
    height: 50%;
}

#c2-to-top-button .c2-to-top-text {
    font-weight: bold;
    font-size: 14px;
    line-height: 1;
}