.nd_options_navigation_search_content_form {}

.nd_options_navigation_search_content_form input[type="search"] {
    background: none;
    border: 0px;
    border-bottom: 2px solid #fff;
    color: #fff;
    font-size: 30px;
    line-height: 30px;
}

.nd_options_navigation_search_content_form input[type="search"]::-webkit-input-placeholder {
    color: #fff;
}

.nd_options_navigation_search_content_form input[type="submit"] {
    font-size: 25px;
    line-height: 40px;
    margin-left: 20px;
}