Text area / quote that will not change any text/html

How can I make textarea or text quote like this site??

When ever i try to use <textarea> wordpress add some extra <p> and also removes some line. How can i fix this problem?? for example this code=

<style>
.a {hide top search and shortcuts bar}
div table div form {display:none !important}
.bodyContent div td div div select {margin-top:-1000px;}
.bodyContent div div select {width:0px !important;}
.bodyContent table table div form {display:inline !important;}
</style>