*{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Segoe UI', Verdana, Geneva, Tahoma, sans-serif
}

body{ 
background-color: #f0f0f0;
padding: 20px;
}

.container{
   max-width: 800px;
   margin: auto;
   background: #fff;
   border-radius: 12px;
   box-shadow: 0 5px 15px rgba(0,0,0,0.1);
   padding:30px;
}