a {
            text-decoration: none;
        }

        body {
            font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
            background-color: #f4f4f4;
        }

        .jumbotron {
            background-color: #79c142;
        }

        .title {
            color: #333;
            text-align: center;
            text-decoration: none;
            font-weight: bold;
        }

        .input-group input[type="text"] {
            border-color: #ccc;
            border-radius: 4px;
            padding: 10px;
        }

        .input-group-btn button {
            background-color: #4CAF50;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 4px;
            cursor: pointer;
        }

        .alphabet-table td {
            text-align: center;
        }

        .clickable:hover {
            background-color: #ddd;
        }

        .selected-letter {
            font-weight: bold;
        }

        .search-form {
            /*the container must be positioned relative:*/
            position: relative;
            display: inline-block;
            width: 100%;
        }

        .search-results {
            position: absolute;
            z-index: 99;
            top: 100%;
            left: 15px;
            right: 15px;
            display: none;
        }

        .list-group-item-link {
            display: block;
        }

        .menu-item {
                border: none;
        }