How to create a circle using jquery ..

How to create a circle using jquery ..

This is the code which I am using..

$('#buttons1').resize(function(height) {
    var fuente = $(this).height() / 2;
    var margen = (fuente / 2) - 5;
    $('.contenido').css('font-size', fuente + 'px');
    $('.contenido').css('margin-top', margen + 'px');
});
    
CSS---

#buttons1{   /*buttons1 central*/
    background: #F9121E;
    width: 100px;
    height: 100px;
    margin: 50px auto;
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
    border-radius: 50%;
    border:3px solid #000;
}


DIV id--

<div id="buttons1"></div>

Now here is my problem..

I need to provide different div name... How can I achieve this? Please Help...