header.masthead:before {
    opacity: 0.0;
}

.accordion-button:not(.collapsed) {
    background-color: #ffcccc;
    color: red;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 3.5rem;
    width: 3.5rem;
    background-color: #4e73df;
    color: #fff;
    border-radius: 100%;
    font-size: 1.5rem;
}