body {  
        color: #222;  
        font: 0.8em Arial, Helvetica, sans-serif;  
    }  
      
    h1 {  
        font: 2em normal Arial, Helvetica, sans-serif;  
        margin-bottom: 0.5em;  
    }  
     
   #container {  
       margin: 0 auto;  
       width: 80%;  
   }  
   
.invalidInput
{
	background: #ccc000;
}
  
   table#cart {  
       border-collapse: collapse;  
       margin-bottom: 1em;  
       width: 100%;  
   }  
         
       table#cart th {  
           background: #006b68;  
           color: #fff;  
           text-align: left;  
           whitewhite-space: nowrap;  
       }  
         
       table#cart th,  
       table#cart td {  
           padding: 5px 10px;  
       }  
         
       table#cart .item_name {  
           width: 100%;  
       }  
         
       table#cart .quantity input {  
           text-align: center;  
       }  
         
       table#cart tr td {  
           background: #fff;  
       }  
         
       table#cart tr.odd td {  
           background: #eee;  
       }  
         
       .center {  
           text-align: center;  
       }