Unable to navigate through the menu - the content that is "hidden" behind the menu will scroll

Question

Unable to navigate through the menu - the content that is "hidden" behind the menu will scroll

Recently, I put together a compact menu using tailwindcss which is functioning well. However, there seems to be an issue when this menu is viewed on mobile devices, as the user ends up scrolling the content underneath the menu instead of the menu itself. This causes some menu items to disappear off-screen.

To illustrate this problem, I have created a CodePen demonstration:

Here's the link to the demonstration

This is how I set the fixed position for the menu:

<div class="bg-gray-500 md:flex md:justify-between md:items-center md:px-4 md:py-3  w-full z-50 top-0 fixed">
        <div class="flex items-center justify-between px-4 py-3 md:p-0">
            [...]
        </div>
</div>

I've also prepared a gif demonstrating the issue - simply click on the image below to view the animation:

https://i.sstatic.net/gYjWG.gif

It's unclear to me why this behavior is occurring. My suspicion is that there may be an error in how I implemented the fixed positioning. Any assistance would be greatly appreciated, as my objective is to create a scrollable and fixed menu for mobile devices.

html css tailwind-css

Answer 1

Answer №1

There are two possible solutions to consider, one utilizing JavaScript and the other without it.

I suggest starting with the solution that doesn't require JavaScript and then incorporating JavaScript for enhancement later on.

One approach is to utilize the sticky position for the navbar instead of fixed.

A demonstration can be found in this codepen example, specifically designed for "mobile layout."

The advantage of this method is that it functions right away with just a simple class change (adding the sticky class):

<div class="bg-gray-500 md:flex md:justify-between md:items-center md:px-4 md:py-3  w-full z-50 top-0 sticky">
  <div class="flex items-center justify-between px-4 py-3 md:p-0">
    [...]
  </div>
</div>

However, the downside is that the menu does not stay fixed in place.

To address this issue, we will need to incorporate a bit of JavaScript (not included in the codepen).

In essence, we must prevent overflow within the content container (not the actual body) and set a bottom property to define the navbar height along with overflow-y: scroll; for the navigation element.

You can refer to this codepen example for a visual guide. Make sure to view it in "mobile layout."

These are the key classes involved:

.header-wrapper {
  bottom: 0;
  overflow-y: scroll;
}

body {
  overflow: hidden;
}

This class should be added to the first child of the header element:

<header class="lg:mb-20">
    <div class="header-wrapper bg-gray-500 md:flex md:justify-between md:items-center md:px-4 md:py-3  w-full z-50 top-0 fixed">
  </div>
</header>

Remember, this class needs to be applied only for mobile devices when the menu is open.

I hope this explanation proves helpful!

Answer 2

There are two possible solutions to consider, one utilizing JavaScript and the other without it.

I suggest starting with the solution that doesn't require JavaScript and then incorporating JavaScript for enhancement later on.

One approach is to utilize the sticky position for the navbar instead of fixed.

A demonstration can be found in this codepen example, specifically designed for "mobile layout."

The advantage of this method is that it functions right away with just a simple class change (adding the sticky class):

<div class="bg-gray-500 md:flex md:justify-between md:items-center md:px-4 md:py-3  w-full z-50 top-0 sticky">
  <div class="flex items-center justify-between px-4 py-3 md:p-0">
    [...]
  </div>
</div>

However, the downside is that the menu does not stay fixed in place.

To address this issue, we will need to incorporate a bit of JavaScript (not included in the codepen).

In essence, we must prevent overflow within the content container (not the actual body) and set a bottom property to define the navbar height along with overflow-y: scroll; for the navigation element.

You can refer to this codepen example for a visual guide. Make sure to view it in "mobile layout."

These are the key classes involved:

.header-wrapper {
  bottom: 0;
  overflow-y: scroll;
}

body {
  overflow: hidden;
}

This class should be added to the first child of the header element:

<header class="lg:mb-20">
    <div class="header-wrapper bg-gray-500 md:flex md:justify-between md:items-center md:px-4 md:py-3  w-full z-50 top-0 fixed">
  </div>
</header>

Remember, this class needs to be applied only for mobile devices when the menu is open.

I hope this explanation proves helpful!

Answer 3

Answer №2

The reason for this behavior is due to the presence of the fixed property being applied in that specific section. If you are looking to make adjustments for smaller screens, consider using absolute instead; the choice between these options will depend on the desired outcome.

Alternatively, utilizing absolute md:fixed should resolve the issue. Following this adjustment, feel free to customize the positioning as needed.

Answer 4

The reason for this behavior is due to the presence of the fixed property being applied in that specific section. If you are looking to make adjustments for smaller screens, consider using absolute instead; the choice between these options will depend on the desired outcome.

Alternatively, utilizing absolute md:fixed should resolve the issue. Following this adjustment, feel free to customize the positioning as needed.

Answer 5

Answer №3

If your menu takes up the entire screen, there is a clever trick you can use to ensure natural scrolling. Here's how: set your body position to fixed and make your menu relative so that scrolling works smoothly.

Assuming your UI is enclosed within a container (a simple div will do) rather than directly in the body, follow these steps:

When opening the menu, execute the following code:

const uiContainer = document.getElementById('ui-container');
uiContainer.style.position = 'fixed';

/* Save scrollX and scrollY for when the menu closes */
uiContainer.style.top = `-${window.scrollY}px`;
uiContainer.style.left = `-${window.scrollX}px`;
uiContainer.style.width = '100%';

When closing the menu, use this code:

uiContainer.style.position = null;
uiContainer.style.width = null;
uiContainer.style.top = null;
uiContainer.style.left = null;

window.scrollTo(savedScrollX, savedScrollY);

Then add your menu as a child of the body with position: relative, allowing for natural scrolling in any browser.

Hope this helps!

Answer 6

If your menu takes up the entire screen, there is a clever trick you can use to ensure natural scrolling. Here's how: set your body position to fixed and make your menu relative so that scrolling works smoothly.

Assuming your UI is enclosed within a container (a simple div will do) rather than directly in the body, follow these steps:

When opening the menu, execute the following code:

const uiContainer = document.getElementById('ui-container');
uiContainer.style.position = 'fixed';

/* Save scrollX and scrollY for when the menu closes */
uiContainer.style.top = `-${window.scrollY}px`;
uiContainer.style.left = `-${window.scrollX}px`;
uiContainer.style.width = '100%';

When closing the menu, use this code:

uiContainer.style.position = null;
uiContainer.style.width = null;
uiContainer.style.top = null;
uiContainer.style.left = null;

window.scrollTo(savedScrollX, savedScrollY);

Then add your menu as a child of the body with position: relative, allowing for natural scrolling in any browser.

Hope this helps!

Unable to navigate through the menu - the content that is "hidden" behind the menu will scroll

Answer №1

Answer №2

Answer №3

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