how to add code snippet in blogger

<textarea autocomplete="off" class="code_box" id="textareaCode" spellcheck="false"> </textarea> <style> .code_box{background:#000000;background-repeat:no-repeat;border:solid #ffffff;border-width:1.4px;color:#00ff00;font:13px Inconsolata,Inconsolata,monospace;line-height:16px;margin:10px 0 10px 10px;max-height:200px;min-height:16px;overflow:auto;padding:10px;width:87%;height:140px;-webkit-box-shadow:0 1px 4px rgba(0,0,0,0.25); -moz-box-shadow:0 1px 4px rgba(0,0,0,0.25); box-shadow:0 1px 4px rgba(0,0,0,0.25) } </style>