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@import url('https://cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css'); html { font-family: Helvetica, Arial, sans-serif; } .reveal code, .reveal pre { font-family: Hack } .reveal section img { background:none; border:none; box-shadow:none; } .container{ display: flex; } .col{ flex: 1; }