main.css

.input-group {
    padding: 20px;
}

.btn-primary {
    padding: 5px;
    color: white;
    background: blue;
    border-radius: 4px;
}

.btn-primary:hover {
    background-color: blue;
    opacity: 0.6;
    scale: 1.05;
}

.student-card {
    margin: 20px;
    border: 2px solid grey;
    padding: 10px;
    display: inline-block;
    text-align: center;
}