html,
body {
    height: 100%;
    width: 100%;
}

body .btn.btn-outline-purple {
    background-color: transparent;
    border-color: #44286c;
    color: #44286c;
    transition: .3s;
}

body .btn.btn-outline-purple:hover {
    background-color: #44286c;
    color: #fff;
}