body{

font-family:Arial;

max-width:700px;

margin:auto;

padding:30px;

}

textarea{

width:100%;

height:250px;

font-size:16px;

}

button{

padding:12px 25px;

font-size:18px;

cursor:pointer;

}

pre{

background:#eee;

padding:20px;

margin-top:20px;

white-space:pre-wrap;

}