body{background-color:#F5F5F5}.box{overflow-y:auto}.header,.card-header{background-color:#318CE7}.form{width:100px}.sidebar{width:280px;height:100vh}.text-header{font-weight:bold;font-size:18px}.text-body{font-size:16px}.text-message{position:absolute;top:40%;left:60%;transform:translate(-50%, -50%)}