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Introduction to HTML and CSS

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CSS Images

3:31 with Laura Coronel

Explore CSS techniques for enhancing images and backgrounds. Learn how to style images, center them, add borders, and set background properties to create visually appealing web designs.

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Treehouse - Responsive web development

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    Something that you may have noticed is that our recipe image doesn't have a set 0:00
    width or height since we took away its height and 0:04
    width properties earlier in the stage. 0:07
    This image is currently displaying at its original dimensions, 0:10
    which are 600 by 400 pixels. 0:15
    However, something interesting happens if we resize the screen so 0:17
    that it's narrower than the image. 0:21
    Since the image is displaying at its original dimensions, it will always 0:24
    display at 600 pixels wide even if the browser window is too small for it. 0:29
    This is not ideal for 0:34
    us because we might have visitors who are viewing from their phones. 0:35
    Remember the max width property from the box model video, 0:40
    that property can be used for images too. 0:44
    Let's find the hash intro image selector and 0:47
    add a max width to the list of declarations. 0:50
    But what can we put here? 0:54
    Any pixel measurement will give us the same issue. 0:56
    It's good to know that pixel is just one type of unit that we can use. 0:59
    Another is percentage. 1:04
    Here we can assign a max width of 100% of the images container. 1:06
    Let's give it a go. 1:11
    Save and refresh the page. 1:13
    If the containers width is less than 600 pixels, 1:15
    we can see that the image now shrinks to fit within its container. 1:19
    And if we resize the browser window so that it's larger than 600 pixels, 1:23
    the image retains its original dimensions. 1:28
    This is called responsive web development, and there's a lot to learn about it. 1:31
    If you're interested, check out some resources and 1:36
    links to other courses in the teacher's notes. 1:39
    Finally, let's assign this background image that we can see in the mockup. 1:42
    To do this, we'll use the background-image property on the body element. 1:47
    As you might have guessed, 1:52
    this property allows us to select an image to use as the element's background. 1:54
    Let's find the body CSS rule block and add the background image property. 1:58
    When you want to set the background image property to a file that's located 2:05
    in a folder, you must use the URL notation to specify the path to the image file. 2:11
    Without this, the browser might not know how to interpret 2:17
    the value as a reference to an image file. 2:21
    Since we're using a file hosted in our own project, let's use a relative link. 2:25
    First, let's mention the image folder and then the slash, 2:31
    and then the image name, background.jpg. 2:36
    Save the file, and let's check out the page. 2:40
    Brilliant, we've got a repeating pattern background that matches the mockup. 2:45
    Now, I don't know about you, but having a repeated background move with me 2:50
    when scrolling can be a bit much on the eyes. 2:55
    To prevent this, I like fixing the background so 2:58
    that it remains stationary while I scroll. 3:01
    We can do this by applying an additional declaration using 3:04
    the background attachment property and the fixed value, like so. 3:09
    Save and refresh the page. 3:14
    Now we can see that the background pattern stays fixed even when 3:18
    scrolling down the page. 3:22
    Fantastic job, 3:24
    we've just made the carbonara.html page look just like the mockup. 3:25

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