![]() You can also consider using a component library aligned with the spacing guidelines of a particular design system. ![]() To add spacing between siblings and avoid margin collapse altogether, consider using Flexbox or Grid and utilizing their gap functionalities. Take note of which layout mode you are in and watch out for margin collapse whenever in normal Flow Layout. If you need to increase space within the Flow layout, reach first for padding if possible.Īlso, consider the layout mode when adding a margin. The Box Model How to Avoid Margin Collapseįirst, remember that margins should preferably be used to increase the distance between sibling elements, not to create spacing between a child and a parent. This will help you to see if margins are shared. The Inspect feature in your browser is a great tool to get a visual on your margins, padding, and other aspects of the Box Model. A element between vertical siblings can prevent collapsing.Margin collapse can stack and create a domino effect of siblings effecting each other.No margin collapse in Flex, Grid, or Positioned Layout.Horizontal sibling elements will not collapse.An "invisible" element like a will not stop margin collapse.Collapse will only occur in Flow Layout, which is the default layout mode.Elements are block-level, such as div or p.Review the comparisons below to gain a better grasp on when margin collapse can happen. There are different scenarios when margins can collapse. Alternatively, a margin of 10px and a margin of -1opx will result in no margin spacing (-10 + 10 = 0)! How to Recognize Margin Collapse Here is where some math will factor in.įor example, a margin of -30px and a margin of 10px will result in a shared margin space of -20px. When a negative and a positive margin interact, the pixels will be added together, cancelling each other out. The result of a -30px margin and a -100px collision will result in a margin space of -100px. They work as positive margins do, where the greater number will take over. Negative margin values are also susceptible to margin collapse. Margin Collapse Code Example Block-Level Element One Instead of trying to increase margins by adding extra pixels until the spacing is correct, you can learn the inner workings of the margin property so you can recognize when collapsing can occur. You'll likely see applied spacing that doesn't seem to match up with what you expect. Margin collapse can cause unexpected behaviors in your layout. Fortunately, there are precautions we can take to avoid this. Inconsistencies may occur depending on, where that component is placed as the margin may interact with another. For example, if you are creating a reusable component that is expected to have a set consistent margin space surrounding it, regardless of placement. In various scenarios this interaction can become problematic. These units can be calculated against each other even with mixed use. If a margin of -70px collides with a margin of -90px, -90px will win.Īlthough a negative number is technically a smaller value on a mathematical scale than a positive number, with margin collapse instead it is helpful to remember that a higher numerical value will hold the higher significance.Ĭollapsing is relevant regardless of the unit of measurement such as pixels, rem, em, or percentages. If a margin of 70px collides with a margin of 90px, the 90px margin will win. It is important to clarify what it means to be the larger number. You can visualize this as an arm wrestling match, where the larger margin will take over and win. ![]() The size of this shared space is dictated by the larger number margin. Margin collapse occurs when vertically adjacent margins of block-level elements collide to share a general margin space.
0 Comments
Leave a Reply. |