How to split ul into multiple columns

[caption id="attachment_851" align="alignnone" width="308"] ul multi column[/caption]

[sourcecode language="css"]
ul{
width: 300px;
overflow: hidden;
}

ul li{
float: left;
width: 75px;
}
[/sourcecode]

HTML Email with Codeigniter

[sourcecode language="php"]
$this->email->to( 'abc@gmail.com' );
$this->email->subject( 'Test' );
$this->email->message( $this->load->view( 'email/message', $data, true ) );
$this->email->send();
[/sourcecode]