Traté de envolver una sola palabra que contiene alrededor de 500 caracteres en un div.

<table><tr><td style="width: 100px;" colspan=""><div class="wordwrap"><p>
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</p></div> </td></tr></table>

con esta solución proporcionada en¿Hay una manera de envolver palabras con palabras largas en un div?

<style type="text/css">
 .wordwrap { 
   white-space: pre-wrap;      /* CSS3 */   
   white-space: -moz-pre-wrap; /* Firefox */    
   white-space: -pre-wrap;     /* Opera <7 */   
   white-space: -o-pre-wrap;   /* Opera 7 */    
   word-wrap: break-word;      /* IE */
}
 </style>

Pero no está funcionando. Seguido esto¿Hay alguna forma de envolver el texto html cuando se usa 'toda una palabra'? además . ¿Cual podría ser el problema?