.sources-btn {
    width: 2rem;
    height: 2rem;
    margin: 4px;
    padding: 4px;
    background: #dc3545;
}

.sources-btn:hover {
    background: #bb2d3b;
}

.sources-btn:focus {
    background: #bb2d3b;
}

.sources-add {
    background: #198754;
}

.sources-add:hover {
    background: #157347;
}

.sources-add:focus {
    background: #157347;
}