/* http://meyerweb.com/eric/tools/css/reset/ v2.0 | 20110126 License: none (public domain) */ html, body, div, span, applet, object, iframe, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video { margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline; } /* HTML5 display-role reset for older browsers */ article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; } * { overflow-x: hidden; } body { line-height: 1; } ol, ul { list-style: none; } blockquote, q { quotes: none; } blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; } table { border-collapse: collapse; border-spacing: 0; } .nav { padding: 1%; line-height: 150%; width: 98%; height: 30px; display: block; background-color: grey; } .nav *{ margin-left: 5px; margin-right: 5px; } header { width: 100%; height: 400px; text-align: center; display: block; padding-top: 15%; background-color: lightblue; color: white; font-family: 'Bangers', cursive; font-size: 1000%; background-image: url("https://media3.giphy.com/media/vjZkgd6XlhPHSZgQNY/200.gif"); background-repeat: no-repeat; background-size: cover; } h1 { text-align: center; } ul { list-style-type: none; } li { display: inline; } li a { text-decoration: none; color:white; padding-right: 5px; } .carddiv { width: 100%; padding:5px; display: flex; align-items: center; justify-content: center; } .card img { width: 250px; height: 300px; display: block; margin-left: auto; margin-right: auto; } .card { width: 250px; height: 300px; text-align: center; display: block; border: 1px; border-color: black; border-style: solid; border-radius: 10px; margin-left: auto; margin-right: auto; } @media screen and (max-width: 768px) { header { font-size: 500%; padding-top: 30%; height: 400px; } .nav { padding-top: 5px; text-align: center; } }