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The background-color Property</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/background-image">2. The background-image Property</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/background-repeat">3. The background-repeat Property</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/background-position">4. The background-position Property</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/background-position-2">5. A Little More on background-position</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/background-attachment">6. The background-attachment Property</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/background-property">7. The background Property</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/summary-1">8. Summary of “Backgrounds: An Introduction. Part 1”</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/challenge-1">9. Challenge: Cat Comics</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/jpeg-format">10. JPEG format</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/png-8-format">11. The PNG-8 Format</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/png-24-format">12. PNG-24 format</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/advanced-styling/backgrounds/gif-format">13. The GIF Format</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/multiple-backgrounds">14. Multiple backgrounds</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/repeating-backgrounds">15. Effects with a Repeating Background</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/sprites">16. Sprites</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/summary-2">17. Summary of “Backgrounds: An Introduction. Part 2”</a></li><li class="main-nav__course-contents-item"><a href="/courses/advanced-styling/backgrounds/challenge-2">18. Challenge: CAT Academy</a></li></ul></div></div><a class="main-nav__course-item main-nav__course-button main-nav__course-button--next" href="/courses/advanced-styling/backgrounds/multiple-backgrounds">Multiple backgrounds</a></div><ul class="main-nav__list main-nav__list--user main-nav__list--user-guest"><li class="main-nav__item" itemprop="name"><a class="main-nav__link" href="/signup?redirect_url=%2Fcourses%2Fadvanced-styling%2Fbackgrounds%2Fgif-format" title="Sign up" data-modal="open" data-value="register" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#user"></use></svg></span>Sign up</a></li><li class="main-nav__item main-nav__item--login" itemprop="name"><a class="main-nav__link" href="/login?redirect_url=%2Fcourses%2Fadvanced-styling%2Fbackgrounds%2Fgif-format" title="Log in" data-modal="open" data-value="login" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg 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course-tab--active js--theory-tab__theory"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered js--theory-tab__comments"><span class="course-tab__icon"><svg aria-hidden="true" style="width: 16px; height: 16px; fill: #2e2c9c;"><use xlink:href="/img/sprites/up.svg#comment"></use></svg></span><span class="course-tab__title">Comments</span></li></ul><section class="course-theory__content"><div class="js--theory-pane__theory course-theory__content-inner"><h1 class="course-theory__content-heading">The GIF Format</h1><div class="course-theory__content-text"><p>Probably the only reason to use GIF is that it supports animated images.</p><p>For all other cases, use PNG or JPEG (if you need to save a photo and the equivalent PNG file would be too large).</p></div></div><div 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