body{ 
   background: url('../images/brick.jpg');
}
.container-fluid{
   margin-top: 20px;
}
.alert{
   border-radius: 0;
}
.list-group{
   border: 10px solid rgba(50, 120, 180, 0.5);
}
.list-group-item:first-child{
   border-top-left-radius: 0;
   border-top-right-radius: 0;
}
.list-group-item:last-child {
   border-bottom-right-radius: 0;
   border-bottom-left-radius: 0;
}