.collapsible {
    position: relative;
    background-color: #30343f00;
    color: #6df6ff;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: 1px solid #6df6ff;
    text-align: center;
    /* outline: none; */
    font-size: 15px;
    z-index: 4;
}

.active,
.collapsible:hover {
}

.content-exp {
    padding: 0 18px;
    display: none;
    overflow: hidden;
    background-color: #000;
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
    max-width: 1170px;
    margin: 10px auto;
    text-align: center;
}