Check empty value for all fields
<form action="abc.html" method="POST" class="submit">
    <input type="text" name="name"><br>
    <input type="text" name="name"><br>
    <input type="text" name="name"><br>
    <button id="cli">Submit</button>
</form>



$('.submit').submit(function() {
    var input = $(this).closest('form').find('input[type="text"]');
  if (!$(input).val()){
    var cssObj={'border-radius':'5px',border:"none","box-shadow":"0 0 1px 1px red",outline:"none",background:"#ffc4c4"};
    $('input[type="text"]').css(cssObj);
    return false;
  };
});

$('.submit').submit(function() {
        var input = $(this).closest('form').find('input[type="text"]');
        var result = true;
        input.each(function(){
            if (!$(this).val()){
              var cssObj={'border-radius':'5px',border:"none","box-shadow":"0 0 1px 1px red",outline:"none",background:"#ffc4c4"};
              $(this).css(cssObj);
              result = false;
            };
        });
        return result;
    });