.container{
    display: flex;
    width: 100%;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    background-color: whitesmoke;
    padding: 20px 0px;
    border-radius: 20px;
    margin-bottom: 30px;
}

main{
    margin-top: 90px;
}

.container a{
    width: 300px;
    height: 100px;
    text-align: center;
    padding: 15px;
    background-color: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    font-size: 28px;
    transition: background-color 0.3s ease;
    margin: 0px 20px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
}

.heading{
    text-align: center;
    font-size: 40px;
    margin: 20px 0px;
}

.container a:hover{
    background-color: #555;
}

.btn-cont a {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #ffffff; 
    border: 2px solid #007bff;
    color: #007bff;
    padding: 10px 15px;
    font-size: 20px;
    font-weight: bold;
    transition: background-color 0.3s ease, color 0.3s ease;
    border-radius: 5px;
    width: 70px;
    text-align: center;
    margin: 20px 30px;
}

.btn-cont a:hover {
    background-color: #0056b3;
    color: #e6e6e6;
}

@media (max-width: 660px) {
    .btn-cont  {
        width: 100%;
        display: flex;
        justify-content: center;
        margin: 10px 0px;
    }
}

@media (max-width: 400px) {
    .container{
        display: flex;
        flex-direction: column;
    }

    .container a{
        margin-top: 20px;
    }
}