article.main-content h1{font-size: 25px !important; line-height: revert; margin-bottom: 1em;} article.main-content h2{font-size: 22px !important; line-height: revert;} article.main-content h3{font-size: 19px !important; line-height: revert;} article.main-content h4{font-size: 16px !important; line-height: revert;} article.main-content h5{font-size: 13px !important; line-height: revert;} article.main-content h6{font-size: 10px !important; line-height: revert;} article.main-content ul, article....| science.osti.gov
