react-cascading-menu/example/src/styles.css

React-Cascading-Menu is a multi-selectable cascading menu component for React, providing horizontal navigation and global search for efficient option selection.

.btn{
    background-color: #007BFF;
    padding: 5px;
    border-radius: 5px;
    margin-right: 5px;
    color: #ccc;
    font-size: 1rem;
    cursor: pointer;
}

.md-top{
    margin-top: 5px;
}