.announcement-container {
    margin: 80px auto;
    max-width: 1000px;
}

.header-title {
    font-weight: bold;
    word-break: break-all;
}

.announcement-date {
    font-weight: bold;
    margin: 20px 0;
    color: #02b5ef;
    font-size: 18px;
}

.announcement-content {
    font-size: 18px;
    margin-top: 20px;
    word-break: break-all;
    text-align: justify;
}

.btn-back {
    display: block;
    width: 50%;
    background-color: #6EBB58;
    color: #ffffff;
    padding: 12px;
    text-decoration: none;
    text-align: center;
    border-radius: 6px;
    margin: 20px auto 0 auto;
}

.btn-back:hover {
    color: #ffffff;
}

@media screen and (max-width: 768px) {
    .announcement-container {
        margin: 0 auto;
        width: calc(100% - 20px);
    }

    .header-container, .announcement-date {
        margin-left: 10px;
        margin-right: 10px;
    }

    .button-back-wrapper {
        margin-bottom: 20px;
    }
}