.wa-box{
max-width:500px;
margin:40px auto;
padding:20px;
background:#fff;
border-radius:10px;
box-shadow:0 5px 20px rgba(0,0,0,.1);
font-family:sans-serif;
}

input, textarea{
width:100%;
margin:10px 0;
padding:10px;
}

button{
background:#25D366;
color:#fff;
border:none;
padding:10px;
cursor:pointer;
}