<button mdbBtn color="success" size="lg">התנסות</button>

Was shadow: https://imgur.com/a/fDPi6wH

Now no shadow: https://imgur.com/a/0QZWouO

.btn {
    box-shadow: 0 2px 5px 0 rgba(0,0,0,.16), 0 2px 10px 0 rgba(0,0,0,.12);
    padding: .84rem 2.14rem;
    font-size: .81rem;
    transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
    margin: .375rem;
    border: 0;
    border-radius: .125rem;
    cursor: pointer;
    text-transform: uppercase;
    white-space: normal;
    word-wrap: break-word;
    color: inherit;
}