.btn-outline-secondary {
    color: #555;
    border-color: #aaa;
}
.btn-outline-secondary:hover {
    color: #212529;
    background-color: #e9ecef;
    border-color: #aaa;
}
.btn-outline-secondary.focus,
.btn-outline-secondary:focus {
    box-shadow: 0 0 0 0.2rem rgba(233, 236, 239, 0.5);
}
.btn-outline-secondary.disabled,
.btn-outline-secondary:disabled {
    color: #555;
    background-color: transparent;
}