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If you are looking to fix horizontal lines on laptop screen display, you are at the right place because in this article, we will show you all the solutions which you could use to fix the lines on laptop display. While this is a hardcore hardware LCD and display problem, you could still apply some software and hardware tricks before sending your laptop to the vendor or technician for an LCD replacement or a comprehensive checkup. Some users have reported vertical and horizontal lines on laptop, covering half of the screens. The lines look multicolored sometimes, or they could also be black and white. Here are the ways to fix horizontal and vertical lines on laptop screen on any laptop like HP, Lenovo, Samsung, Dell, Acer etc.
Fix Horizontal, Vertical Lines Laptop Screen
Pressing on the Screen and then using screw
This solution has worked for many users. Just press on the LCD screen with your both the thumbs on two different places. Place one thumb on the left side and place the other one on a little bit of the right side and then press the thumbs of the screen. This will fix the lines on laptop.
You can press the screen on different locations (on the areas which is showing lines) and check which location is the spot for you. As you can see in the image, pressing the screen from the center with finger also removes the lines. You can also press the laptop screen from the left, on the screen panel side, from the front and back.
As this is a temporary fix, you will have to send your laptop to a mechanic to get the detailed fix. He will probably replace the LCD or tighten the screen from the backend.
Meanwhile, you can use the bolt screw gadget on your screen to make the screen pressed. This will keep the display on and you will not see the lines.
You can tighten the screen from the panel side by screwing this thing up. The lines will go. You can pretty much use your laptop in this way forever. No need to spend hefty money on screen replacement.
Fixing Hinges
If the above trick wasn’t able to fix your lines on laptop screen problem, you can use another way.
This is a bit technical way which involves unscrewing the front cover panel of your laptop screen. Put the laptop upside down with screen in front of you and open the front cover. Now touch the corners of the screen and check which part is sensitive to touch in terms of lines.
Put a cardboard in the covering of the hinges of the place where the lines go.
To have a detailed look on how to open the front cover and where to put the cardboard exactly, watch this great video.
This is how to fix horizontal lines on laptop screen display. In case of any confusion of further elaboration, feel free to comment on this post.
This article was updated on January 31, 2019 to update the below provided information. The old information is not wrong, however is the newest version less hacky and does make use of Flexbox, one of the new standards of modern web layouts.
[Update]
[End of Update]
Here’s the original article from August 2013:
We’ve all seen margin: 0 auto;
for horizontal centering, but margin: auto;
has refused to work for vertical centering… until now! But actually (spoiler alert!) absolute centering only requires a declared height and these styles:
I’m not the pioneer of this method (yet I have dared to name it Absolute Centering), and it may even be a common technique, however, most vertical centering articles never mention it and I had never seen it until I dug through the comments section of a particular article.
There, Simon linked to this jsFiddle that blew every other method out of the water (the same method was also mentioned by Priit in the comments). Researching further, I had to use very specific keywords to find someother sources for this method.
Having never used this technique before, I put it to the test and discovered how incredible Absolute Centering really is.
Find additional demos, a comparison table, and more on CodePen.
Advantages
- Cross-browser (including IE8-10)
- No special markup, minimal styles
- Responsive with percentages and min-/max-
- Use one class to center any content
- Centered regardless of padding (without
box-sizing
!) - Blocks can easily be resized
- Works great on images
Caveats
- Height must be declared (see Variable Height)
- Recommend setting
overflow: auto
to prevent content spillover (see Overflow) - Doesn’t work on Windows Phone
Browser Compatibility:
Chrome, Firefox, Safari, Mobile Safari, IE8-10.Absolute Centering was tested and works flawlessly in the latest versions of Chrome, Firefox, Safari, Mobile Safari, and even IE8-10.
Explanation
After researching specs and documentation, this is my understanding of how Absolute Centering works:
- In the normal content flow,
margin: auto;
equals ‘0’ for the top and bottom.W3.org: If ‘margin-top’, or ‘margin-bottom’ are ‘auto’, their used value is 0. position: absolute;
breaks the block out of the typical content flow, rendering the rest of the content as if that block weren’t there.Developer.mozilla.org: …an element that is positioned absolutely is taken out of the flow and thus takes up no space- Setting
top: 0; left: 0; bottom: 0; right: 0;
gives the browser a new bounding box for the block. At this point the block will fill all available space in its offset parent, which is the body orposition: relative;
container. Developer.mozilla.org: For absolutely positioned elements, the top, right, bottom, and left properties specify offsets from the edge of the element’s containing block (what the element is positioned relative to). - Giving the block a
width
or aheight
prevents the block from taking up all available space and forces the browser to calculatemargin: auto
based on the new bounding box. Developer.mozilla.org: The margin of the [absolutely positioned] element is then positioned inside these offsets. - Since the block is absolutely positioned and therefore out of the normal flow, the browser gives equal values to
margin-top
andmargin-bottom
centering the element in the bounds set earlier.W3.org: If none of the three [top, bottom, height] are ‘auto’: If both ‘margin-top’ and ‘margin-bottom’ are ‘auto’, solve the equation under the extra constraint that the two margins get equal values. AKA: center the block vertically
Absolute Centering appears to be the intended use for margin: auto;
based on the spec and should therefore work in every standards compliant browser.
TL;DR: Absolutely positioned elements aren’t rendered in the normal flow, so margin: auto;
centers vertically within the bounds set by top: 0; left: 0; bottom: 0; right: 0;
.
Within Container
With Absolute Centering, you can place your content block inside of a position: relative
container to align the block within the container!
The rest of the demos will assume these styles are already included and will provide add-on classes to implement various features.
Absolute Center, Within Container
This box is absolutely centered, horizontally and vertically, within its container usingposition: relative
.
Within Viewport
Want the content block centered in the viewport? Set it to position: fixed
and give it a high z-index, like the modal on this page.
- Mobile Safari: The content block will be centered vertically in the whole document, not the viewport, if it is not within a
position: relative
container.
Offsets
If you have a fixed header or need to add other offsets, simply add it in your content block’s styles like top: 70px;
. As long as margin: auto;
is declared, the content block will be vertically centered within the bounds you declare with top
left
bottom
and right
.
You can also stick your content block to the right or left while keeping it vertically centered, using right: 0; left: auto;
to stick to the right or left: 0; right: auto;
to stick to the left.
Vertical Center, Align Right
This box is absolutely centered vertically within its container, but stuck to the right withright: 0; left: auto;
.
Responsive
Perhaps the best benefit of Absolute Centering is percentage based width/heights work perfectly! Even min-width/max-width
and min-height/max-height
styles behave as expected for more responsive boxes.
Go ahead, add padding to the element; Absolute Centering doesn’t mind!
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Absolute Center, Percentage Based
This box is absolutely centered, horizontally and vertically, even with percentage based widths & height, min-/max-, and padding!
Overflow
Content taller than the block or container (viewport or a position: relative
container) will overflow and may spill outside the content block and container or even be cut off. Simply adding overflow: auto
will allow the content to scroll within the block as long as the content block itself isn’t taller than its container (perhaps by adding max-height: 100%;
if you don’t have any padding on the content block itself).
Resizing
You can resize your content block with other classes or Javascript without having to recalculate the center manually! Adding the resize
property will even let your content block be resized by the user.
Absolute Centering keeps the block centered no matter how the block is resized. Setting min-/max- will limit the block’s size to what you want and prevent it from overflowing the window/container.
If you don’t use resize: both
, you can add a transition
to smoothly animate between sizes. Be sure to set overflow: auto
since the block could be resized smaller than the content.
Absolute Centering is the only vertical centering technique tested that successfully supports the resize: both
property.
Caveats
- Set your
max-width/max-height
to compensate for any padding on the content block itself, otherwise it will overflow its container. - The
resize
property is not supported on mobile browsers or in IE 8-10 so make sure your users have an alternate way of resizing if that is essential to user experience. - Combining
resize
andtransition
properties causes a delay equal to the transition time when the user attempts to resize.
Images
HTML:
CSS:
Images work too! Apply the class/style to the image itself and set height: auto;
like you would with a responsively-sized image to let it resize with the container.
Note that height: auto;
works for images, but causes a regular content block to stretch to fill the container unless you use the variable height technique. It’s likely that because browsers have to calculate the height for the image rendered image, so margin: auto;
ends up working as if you’d declared the height in all tested browsers.
Variable Height
Javascript:
CSS:
Absolute Centering does require a declared height, however the height can be percentage based and controlled by max-height
. This makes it ideal for responsive scenarios, just make sure you set an appropriate overflow.
One way around the declared height is adding display: table
, centering the content block regardless of content length. This causes issues in a few browsers (IE and Firefox, mainly), so my buddy Kalley at ELL Creative wrote a Modernizr test to check if the browser supports this method of centering. Now you can progressively enhance
Caveats
This will break cross-browser compatibility. You may want to consider an alternate technique if the Modernizr test doesn’t meet your needs.
- Not compatible with the Resizing technique.
- Firefox/IE8: Using
display: table
aligns the content block to the top, but is still centered horizontally. - IE9/10: Using
display: table
aligns the content block to the top left. - Mobile Safari: The content block is centered vertically, but becomes slightly off-center horizontally when using percentage based widths.
Absolute Center, Variable Height
This box is absolutely centered vertically within its container, regardless of content height.
Other Techniques
Absolute Centering is a great solution for centering, but there are other methods that may fit more specific needs. The most commonly used or recommended methods are Negative Margins, Transforms, Table-Cell, Inline-Block, and now Flexbox. They are covered more in depth in other articles, so I’ll only cover the basics here.
Negative Margins
Perhaps the most common technique. If exact dimensions are known, setting a negative margin equal to half the width/height (plus padding, if not using box-sizing: border-box
) along with top: 50%; left: 50%;
will center the block within a container.
It should be noted that this is the only method tested that worked as expected in IE6-7.
Advantages
- Works well cross-browser, including IE6-7
- Requires minimal code
Caveats
- Not responsive. Doesn’t work for percentage based dimensions and can’t set min-/max-
- Content can overflow the container
- Have to compensate for
padding
or usebox-sizing: border-box
Absolute Center, Negative Margins
This box is absolutely centered vertically within its container using negative margins.
Transforms
One of the simplest techniques with about the same benefits as Absolute Centering, but supports variable height. Give the content block transform: translate(-50%,-50%)
with the required vendor prefixes along with top: 50%; left: 50%;
to get it centered.
Advantages
- Variable height content
- Requires minimal code
Caveats
- Won’t work in IE8
- Need vendor prefixes
- Can interfere with other
transform
effects - Results in blurry rendering of edges and text in some cases
Absolute Center, Translate(-50%,-50%)
This box is absolutely centered vertically within its container using translate(-50%,-50%)
.
Table-Cell
HTML:
CSS:
This may be the best technique overall, simply because the height can vary with the content and browser support is great. The main disadvantage is the extra markup, requiring a total of three elements to get the final one centered.
Advantages
- Variable height content
- Content overflows by stretching the parent element
- Works well cross-browser
Caveats
- Requires extra markup
Absolute Center, Table/Table-Cell
This box is absolutely centered vertically within its display: table-cell
parent, which is within a display: table
container.
Inline-Block
HTML:
CSS:
By popular demand: Inline-Block centering. The basic idea is using display: inline-block
, vertical-align: middle
and a psuedo element to center your content block inside of a container. My implementation has a few new tricks here that I haven’t seen elsewhere that help solve a few issues.
The content block’s width must be declared to be no wider than 100% of the container minus 0.25em if the content is wider than the container. like a block with long paragraph text. Otherwise, the content block will be pushed to the top, which is the reason for using :after
. Using :before
caused the content to be pushed down 100%!
If your content block needs take up as much available horizontal space as possible, you can add either max-width: 99%;
, which works for bigger containers, or max-width: calc(100% - 0.25em)
depending on the browsers you support and the width of the container.
The benefits are mostly the same as the Table-Cell technique, but I initially left this method out because it’s very much a hack. Regardless, browser support is great and it proves to be a popular technique.
Advantages
- Variable height content
- Content overflows by stretching the parent element
- Works well cross-browser, and can be adapted for IE7 support (view the CSS to see)
Caveats
- Requires a container
- Relies on
margin-left: -0.25em;
to horizontally center correctly, but may need to be adjusted for different fonts/sizes - Content block’s width must be declared to be no wider than 100% of the container minus 0.25em.
Absolute Center, Inline-Block
This box is absolutely centered vertically using display: inline-block
, vertical-align: middle
and a psuedo element.
Flexbox
The future of layout in CSS, Flexbox is the latest CSS spec designed to solve common layout problems such as vertical centering. Smashing Magazine already has a great article on Centering Elements with Flexbox that you should read to for a more complete overview. Keep in mind that Flexbox is more than just a way to center, it can be used for columns and all sorts of crazy layout problems.
Advantages
- Content can be any width or height, even overflows gracefully
- Can be used for more advanced layout techniques.
Caveats
- No IE8-9 support
- Requires a container or styles on the body
Absolute Center, Flexbox
This Flexbox box is absolutely centered vertically within its container.
Recommendations
Each technique has their advantages. Which one you choose mainly boils down to which browsers you support and what your existing markup looks like, but use the comparison table to make the right choice to match the features you need.
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Absolute Centering works great as a simple drop-in solution with no-fuss. Anywhere you used Negative Margins before, use Absolute Centering instead. You won’t have to deal with pesky math for the margins or extra markup, and you can size your boxes responsively.
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If your site requires variable height content with the best browser compatibility, try out the Table-Cell, Inline-Block techniques. If you’re on the bleeding edge, give Flexbox a try and reap the benefits of its advanced layout techniques.