.announcement-container{
    width: 49.6875rem;
    margin: 0 auto;
}
.announcement-title{
    margin-bottom: 5.5rem;
}
.announcement-content__title{
    font-size: 2.125rem;
    margin-bottom: 1.5rem;
}
.announcement-content{
    margin-bottom: 6.625rem
}
.announcement-content img{
    max-width: 100% !important
}
.announcement-content video{
    max-width: 100% !important
}
.announcement-content iframe{
    max-width: 100% !important;
}
@media(max-width: 768px) { /* for test */
.announcement-container{
        width: 100%;
        margin: 1rem 0
}
.announcement-content__title{
        font-size: 1.125rem;
        margin-bottom: .5rem;
}
.announcement-content{
        margin-bottom: 2.625rem
}
.announcement-content iframe{
        height: 57vw
}
}