Presentazione stile I phone

ecco il codice
<p style="margin: 0px; padding: 0px; white-space: pre-wrap; word-wrap: break-word; overflow: hidden; background-color: #CCE6EF; text-align: left;"><span style="font-style: normal; background-color: #DCDCDC; border-radius: 20px 20px 20px 20px; border: 1px solid #696969; box-shadow: 1px 2px 2px #C0C0C0; color: #000; float: left; font-family: 'arial'; font-size: 20px; margin-left: 50px; margin-top: 40px;  margin-bottom: 10px;overflow-x: hidden; overflow-y: auto; padding: 10px; width: 300px;"><span style="text-align: left;">Ehy bella percaso ti chiami Google?</span><span style="font-size: 20px;"><br<br></span></span></span>
<p style="margin: 0px; padding: 0px; white-space: pre-wrap; word-wrap: break-word; overflow: hidden; background-color: #CCE6EF; text-align: left;"><span style="font-style: normal; background-color: #99FF55; border-radius: 20px 20px 20px 20px; border: 1px solid #696969; box-shadow: 1px 2px 2px #C0C0C0;color: #000; float: left; font-family: 'arial'; font-size: 20px; margin-left: 212px; margin-top: 10px;  margin-bottom: 10px;overflow-x: hidden; overflow-y: auto; padding: 10px; width: 300px;"><span style="text-align: left;">No perchè?!?<span style="font-size: 20px;"><br<br></span></span></span><p style="margin: 0px; padding: 0px; white-space: pre-wrap; word-wrap: break-word; overflow: hidden; background-color: #CCE6EF; text-align: left;"><span style="font-style: normal; background-color: #DCDCDC; border-radius: 20px 20px 20px 20px; border: 1px solid #696969; box-shadow: 1px 2px 2px #C0C0C0; color: #000; float: left; font-family: 'arial'; font-size: 20px; margin-left: 50px; margin-top: 10px;  margin-bottom: 30px;overflow-x: hidden; overflow-y: auto; padding: 10px; width: 300px;"><span style="text-align: left;">Perchè hai tutto ciò che cerco</span><span style="font-size: 20px;"><br<br></span></span></span>
</p>