diff --git a/css/midterm.css b/css/midterm.css new file mode 100644 index 0000000..5ff51fd --- /dev/null +++ b/css/midterm.css @@ -0,0 +1,361 @@ +/*! HTML5 Boilerplate v7.3.0 | MIT License | https://html5boilerplate.com/ */ + +/* main.css 2.0.0 | MIT License | https://github.com/h5bp/main.css#readme */ +/* + * What follows is the result of much research on cross-browser styling. + * Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal, + * Kroc Camen, and the H5BP dev community and team. + */ + +/* ========================================================================== + Base styles: opinionated defaults + ========================================================================== */ + +html { + color: #222; + font-size: 1em; + line-height: 1.4; +} + +/* + * Remove text-shadow in selection highlight: + * https://twitter.com/miketaylr/status/12228805301 + * + * Vendor-prefixed and regular ::selection selectors cannot be combined: + * https://stackoverflow.com/a/16982510/7133471 + * + * Customize the background color to match your design. + */ + +::-moz-selection { + background: #b3d4fc; + text-shadow: none; +} + +::selection { + background: #b3d4fc; + text-shadow: none; +} + +/* + * A better looking default horizontal rule + */ + +hr { + display: block; + height: 1px; + border: 0; + border-top: 1px solid #ccc; + margin: 1em 0; + padding: 0; +} + +/* + * Remove the gap between audio, canvas, iframes, + * images, videos and the bottom of their containers: + * https://github.com/h5bp/html5-boilerplate/issues/440 + */ + +audio, +canvas, +iframe, +img, +svg, +video { + vertical-align: middle; +} + +/* + * Remove default fieldset styles. + */ + +fieldset { + border: 0; + margin: 0; + padding: 0; +} + +/* + * Allow only vertical resizing of textareas. + */ + +textarea { + resize: vertical; +} + +/* ========================================================================== + Browser Upgrade Prompt + ========================================================================== */ + +.browserupgrade { + margin: 0.2em 0; + background: #ccc; + color: #000; + padding: 0.2em 0; +} + +/* ========================================================================== + Author's custom styles + ========================================================================== */ + +body { + background-color: black; +} + +#body-wrapper { + font-family: sans-serif; /* choose a better font */ + margin: 0 auto; + max-width: 750px; + text-align: center; +} + +header { + background-color: white; +} + +ul, ol { + text-align: left; + margin-left: 100px; +} + +.particle-wrapper { + position: relative; + height: 400px; +} + +.particle-container { + overflow: hidden; + height: 100%; + position: absolute; +} + +.particle-temp { + border-radius: 50%; + background: white; + margin: 15px; + animation: + blur_fade 20s ease 0s infinite, + circle 5s linear 0s infinite; +} + +@keyframes blur_fade { + from { + height: 2px; + width: 2px; + opacity: 0; + } + 20% { + filter: blur(0.2); + opacity: 0.8; + } + to { + height: 40px; + width: 40px; + filter: blur(3px); + opacity: 0; + } +} + +@keyframes circle { + from { + transform-origin: -10px -10px; + transform: rotate(0deg); + } + to { + transform-origin: -10px -10px; + transform: rotate(360deg); + } +} + +#subtle { + background-color: pink; +} + +#fireworks { + background-color: seashell; +} + +#info1 { + background-color: lemonchiffon; +} + +#info2 { + background-color: aliceblue; +} + +#info3 { + background-color: pink; +} + + + + + + + + +/* ========================================================================== + Helper classes + ========================================================================== */ + +/* + * Hide visually and from screen readers + */ + +.hidden { + display: none !important; +} + +/* +* Hide only visually, but have it available for screen readers: +* https://snook.ca/archives/html_and_css/hiding-content-for-accessibility +* +* 1. For long content, line feeds are not interpreted as spaces and small width +* causes content to wrap 1 word per line: +* https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe +*/ + +.sr-only { + border: 0; + clip: rect(0, 0, 0, 0); + height: 1px; + margin: -1px; + overflow: hidden; + padding: 0; + position: absolute; + white-space: nowrap; + width: 1px; + /* 1 */ +} + +/* +* Extends the .sr-only class to allow the element +* to be focusable when navigated to via the keyboard: +* https://www.drupal.org/node/897638 +*/ + +.sr-only.focusable:active, +.sr-only.focusable:focus { + clip: auto; + height: auto; + margin: 0; + overflow: visible; + position: static; + white-space: inherit; + width: auto; +} + +/* +* Hide visually and from screen readers, but maintain layout +*/ + +.invisible { + visibility: hidden; +} + +/* +* Clearfix: contain floats +* +* For modern browsers +* 1. The space content is one way to avoid an Opera bug when the +* `contenteditable` attribute is included anywhere else in the document. +* Otherwise it causes space to appear at the top and bottom of elements +* that receive the `clearfix` class. +* 2. The use of `table` rather than `block` is only necessary if using +* `:before` to contain the top-margins of child elements. +*/ + +.clearfix:before, +.clearfix:after { + content: " "; + /* 1 */ + display: table; + /* 2 */ +} + +.clearfix:after { + clear: both; +} + +/* ========================================================================== + EXAMPLE Media Queries for Responsive Design. + These examples override the primary ('mobile first') styles. + Modify as content requires. + ========================================================================== */ + +@media only screen and (min-width: 35em) { + /* Style adjustments for viewports that meet the condition */ +} + +@media print, + (-webkit-min-device-pixel-ratio: 1.25), + (min-resolution: 1.25dppx), + (min-resolution: 120dpi) { + /* Style adjustments for high resolution devices */ +} + +/* ========================================================================== + Print styles. + Inlined to avoid the additional HTTP request: + https://www.phpied.com/delay-loading-your-print-css/ + ========================================================================== */ + +@media print { + *, + *:before, + *:after { + background: transparent !important; + color: #000 !important; + /* Black prints faster */ + box-shadow: none !important; + text-shadow: none !important; + } + a, + a:visited { + text-decoration: underline; + } + a[href]:after { + content: " (" attr(href) ")"; + } + abbr[title]:after { + content: " (" attr(title) ")"; + } + /* + * Don't show links that are fragment identifiers, + * or use the `javascript:` pseudo protocol + */ + a[href^="#"]:after, + a[href^="javascript:"]:after { + content: ""; + } + pre { + white-space: pre-wrap !important; + } + pre, + blockquote { + border: 1px solid #999; + page-break-inside: avoid; + } + /* + * Printing Tables: + * https://web.archive.org/web/20180815150934/http://css-discuss.incutio.com/wiki/Printing_Tables + */ + thead { + display: table-header-group; + } + tr, + img { + page-break-inside: avoid; + } + p, + h2, + h3 { + orphans: 3; + widows: 3; + } + h2, + h3 { + page-break-after: avoid; + } +} + diff --git a/midterm.html b/midterm.html new file mode 100644 index 0000000..4849429 --- /dev/null +++ b/midterm.html @@ -0,0 +1,129 @@ + + + + + + CSS Showcase: Particle Animation + + + + + + + + + + + + + + + + + +
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CSS Showcase:

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Particle Animation

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You can use animated particles to create a subtle background effect...

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Or you can make your particles show-stopping!

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Particles are the key to all of the realistic animation effects below. + Check them out!

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Say you’re already familiar with the animation properties of CSS. + What makes particle animation any different?

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The defining characteristics of a particle animation are:

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  1. Numerous animated elements of the same type.
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  2. Randomness/Variation: of particle speed, direction, size, color, etc. This is what gives the animation a natural appearance.
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Professional animation software has the ability to automatically generate an infinite number of particles with randomized properties and realistic physics. With CSS, unfortunately we are limited in a few ways:

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We'll look at some ways to get past these limitations later on.

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Tutorial

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Read on to find out how you can create awesome CSS particle animations yourself!

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Outline

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