tmp.html

<form role="search" method="get" class="search-form" action="<?php echo home_url( '/' ); ?>">
    <label>
        <span class="screen-reader-text"><?php echo _x( 'Search for:', 'label' ) ?></span>
        <input type="search" class="search-field"
            placeholder="<?php echo esc_attr_x( 'Search …', 'placeholder' ) ?>"
            value="<?php echo get_search_query() ?>" name="s"
            title="<?php echo esc_attr_x( 'Search for:', 'label' ) ?>" />
    </label>
    <p>
        <input type="checkbox" class="search-field" id="source-post"
            value="post" name="sources[]" />
        <label for="source-post">Posts</label>
    </p>
    <p>
        <input type="checkbox" class="search-field" id="source-page"
            value="post" name="sources[]" />
        <label for="source-page">Pages</label>
    </p>
    <input type="submit" class="search-submit"
        value="<?php echo esc_attr_x( 'Search', 'submit button' ) ?>" />
</form>