.blogDefaultSection{display:flex}.defaultBackgroundBlack{background:#000}.defaultBlack{color:#000}.blogDefaultSection iframe{margin:1em auto;height:20em}.blogDefaultSection div{margin:1em 0}.blogDefaultSection>div{max-width:1400px;width:100%;margin:0 auto}.blogDefaultSection iframe,.blogDefaultSection img{display:none}.blogDefaultSection.appearImg img,.blogDefaultSection.appearVideo iframe{display:block}.blogDefaultSection img{width:50%;margin:1em auto}.imgUp{flex-direction:column}.imgDown{flex-direction:column-reverse}