html, body, p, ol, ul, li, dl, dt, dd, blockquote, figure, fieldset, legend, textarea, pre, iframe, hr, h1, h2, h3, h4, h5, h6 { @extend %reset-box; } ul { @extend %reset-list; } table { @extend %reset-table; } img, embed, object, audio, video { @extend %responsive-media; } button, input, select, textarea { margin: 0; } iframe { border: 0; } article, aside, figure, footer, header, hgroup, section { display: block; }