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Published byAugustine Owen Modified over 9 years ago
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CIS 1310 – HTML & CSS 4 Visual Elements and Graphics
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CIS 1310 – HTML & CSS Learning Outcomes Create & Format Lines & Borders on Web Pages Add Graphics to Web Pages Configure Images as Backgrounds & Hyperlinks Configure Visual Effects with CSS3 Configure RGBA color with CSS3 Use HTML5 Elements to Caption a Figure Use the HTML5 Meter & Progress Elements Follow Web Design Guidelines for Graphics
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CIS 1310 – HTML & CSS <hr> Inserts Plain Line (Horizontal Rule) Across Page Emphasize Divisions & Transitions In Content Style style=“background-color: #RRGGBB | colorname;” style=“color: #RRGGBB | colorname;” style=“height: number;” style=“width: number;”
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CIS 1310 – HTML & CSS Border Properties border: style width color Shorthand Property Sets All Four Individual Borders Same Format for margin Property
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CIS 1310 – HTML & CSS Border Properties border-style: keyword Keywords none dotted dashed solid double groove ridge inset outset
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CIS 1310 – HTML & CSS Border Properties border-width: thin | medium | thick | # border-color: value
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CIS 1310 – HTML & CSS Border Properties border-width: thin | medium | thick | # border-color: value border-radius: value Configues Rounded Corners for an Element
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CIS 1310 – HTML & CSS Padding Properties White Space Between Content & Border padding: # | % Shorthand Property Sets All Four Individual Paddings padding-left | padding-right | padding-top | padding-bottom: # | %
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CIS 1310 – HTML & CSS Images Formats GIF Better for Clip Art Displays Maximum of 256 Colors Interlaced Image that Comes into Focus While it is Being Displayed Non-interlaced Rendering the Image a Line at a Time Transparency One Color Selected to Not Display Animated Composed of Several Different Images Displayed in Rapid Succession
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CIS 1310 – HTML & CSS Images Formats PNG Better for Clip Art Displays More Colors than GIF Allows Transparency Does Not Allow Animation
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CIS 1310 – HTML & CSS Images Formats JPEG Better for Photographs Unlimited Colors Generally Smaller File Size Control Amount of Compression
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CIS 1310 – HTML & CSS Images Formats SVG Scalable Made Up of Lines, Not Dots Created with XML and Can Be Modified by CSS Easily Edited
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CIS 1310 – HTML & CSS <img> Inserts an Image Into a Document Secondary to Content Attributes alt=“text” Provides Alternative Text that Describes the Image IE Displays ALT Text When User Hovers on Image Users Who Surf With Graphics Turned Off Non-graphical Browsers Alt Text is Displayed in Place of Image Required
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CIS 1310 – HTML & CSS <img> Attributes height=“pixels” Specifies the Image's Height src=“URL” Specifies Location of Image to Place in Web Page Required width=“pixels” Specifies the Image's Width
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CIS 1310 – HTML & CSS <img> Style style=“float: none | left | right;” Place Image on Left / Right & Wrap Text Around It style=“clear: none | left | right;” Display Content After Margin is Clear of Floating Elements style=“margin: top# right# bottom# left#;” style=“border-width: #;” Rendered in Designated Link Color if Image is a Link
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CIS 1310 – HTML & CSS Image Maps Image Map An Image that has Multiple Areas Defined as Links Hotspot An Area in an Image That is Defined as a Link Example
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CIS 1310 – HTML & CSS Image Maps Requirements id Attribute for alt Attribute for
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CIS 1310 – HTML & CSS & & … Contains a Self-contained Unit of Content (e.g., image) Along with One Optional figcaption Element Example <img src="lighthouseisland.jpg" width="250“ height="355" alt="Lighthouse Island“ /> Island Lighthouse, Built in 1870
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CIS 1310 – HTML & CSS <meter> … Displays a Gauge of a Numeric Value Within a Range Example 14417 14,417 Total Visits 7000 7,000 Firefox 3800 3,800 Internet Explorer 2062 2,062 Chrome 1043 1,043 Safari 312 312 Opera 200 200 other
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CIS 1310 – HTML & CSS <progress> … Displays a Bar of a Numeric Value Within a Range Example 5000 Progress Towards Our Goal
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CIS 1310 – HTML & CSS Background Properties background-color: colorname | # background-image: url(imagename.gif)
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CIS 1310 – HTML & CSS Background Properties background-repeat: repeat | repeat-x | repeat-y | no-repeat background-position: % | length | keyword
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CIS 1310 – HTML & CSS Background Properties background-attachment: scroll | fixed
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CIS 1310 – HTML & CSS Background Properties background-clip: content-box | padding-box | border-box Confines Display of Background Image background-origin: content-box | padding-box | border-box Displays Background Image Relative to Value background-size: % | # | cover | contain Resize or Scale Background Image
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CIS 1310 – HTML & CSS Multiple Background Images Example #exampleA { width: 500px; height: 250px; background-image: url(decoration.png), url(ribbon.png), url(old_paper.jpg); background-repeat: no-repeat; background-position: left top, right bottom, left top; }
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CIS 1310 – HTML & CSS Favicon (Favorites Icon) Square Image Associated with a Web Page Named favicon.ico Displayed in Address Bar, Tab, Favorites/Bookmarks Example
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CIS 1310 – HTML & CSS Box Shadows box-shadow Property Specify Horizontal Offset, Vertical Offset, Blur Radius, & Color Example #wrapper { box-shadow: 5px 5px 5px #828282; }
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CIS 1310 – HTML & CSS Opacity opacity Property Configure the Opacity of the Background Color 0 = Completely Transparent; 1 = Completely Opaque Example h1{ background-color: #FFFFFF; opacity: 0.6; }
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CIS 1310 – HTML & CSS RGBA Color rgba Property Red, Green, Blue, Alpha (Transparency) Values for Red, Green, & Blue Must Be From 0 To 255 Alpha Value 0 = Transparent & 1 = Opaque Example h1{ color: rgba(255, 255, 255, 0.7); font-size: 5em; padding-right: 10px; text-align: right; font-family: Verdana, Helvetica, sans-serif; }
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CIS 1310 – HTML & CSS HSLA Color hsla Property Hue, Saturation, Lightness, Alpha (Transparency) Hue - Actual Color from 0 to 360 (Circle) Red = 0; Green = 120; Blue = 240 Saturation – Intensity from 0% to 100% Lightness - Brightness from 0% to 100% Alpha Value 0 = Transparent & 1 = Opaque Example h1{ color: hsla(120, 100%, 100%, 1.0); }
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CIS 1310 – HTML & CSS Gradients linear-gradient & radial-gradient Properties Example #linearBg1 { /* top-bottom */ background: linear-gradient(#000, #400, #800, #c00, #f00); } #linearBg2 { /* left-right */ background: linear-gradient(to right, #000, #500, #a00, #f00); } #linearBg3 { /* diagonal top left-bottom right */ background: linear-gradient(to bottom right, #000, #800, #f00); }
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