body {
   
}

.card img {

}
.card {
    border-radius: 0px;
}
.card-img, .card-img-top {
    border-top-left-radius: 0px; 
    border-top-right-radius: 0px; 
}

footer {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    margin-top: 50px;
}