.back-to-root {
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 5px 12px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    margin-left: 6px;
    margin-right: 15px;
    margin-bottom: 20px;
}
.back-to-root:hover {
    background-color: #45a049;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    text-decoration: none;
}

.theme-selector {
    appearance: none;
    font-size: 14px;
    border-radius: 8px;
    padding: 4px 11px;
    border: 1px solid rgba(128, 128, 128, 0.3);
    background-color: transparent;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.theme-selector:focus {
    outline: none;
    border-color: #4CAF50;
}