.banner img{
border: 4px solid #31363A;
}

.banner:hover img{
border: 4px solid #99FF00;
}

.banner:hover{
color: #99FF00; 
}

.banner2 img{
border: 4px solid #31363A;
}

.banner2:hover img{
border: 4px solid #99FF00;
}

.banner2:hover{
color: #99FF00; 
}