Put your text (i)
in a div and set both div's to display:inline-block.
$(document).ready(function(){
$('#error').hide();
$('#click').click(function(){
var i = $('#input').val();
if (i != "") {
$('ol').prepend('<div class="check" style="display:inline-block"></div> <div style="display:inline-block">' + i + '</div><br /><br />');
}
else {
$('#error').show();
$('#eb').click(function(){
$('#error').hide();
});
}
});
});