why pagespeed keep saying Set an explicit width and height on image elements to reduce layout shifts and improve CLS.
my css
#header img{
max-height:27px;
max-width:300px;
vertical-align:middle;}
my website url
To remove this warning, you need to write it in the img tag, for example :
<img src="image.jpg" alt="your title" width="500" height="250">
I am trying to change the height of the Table header unfortunate an not able to find any way to change table header height.
Could you please help me to reduce the table header height?
I have attached the screen shot.
For everyone who stumbles across this question:
You can change the header height or basically every css attribute of the header via css.
Just add this piece of code to your <style> tag
<style>
>>> .v-data-table-header {
height: 70px;
}
</style>
You can do it only with CSS. Maybe in version 2 it will be done.
Today set style on selector table.v-table thead tr {}
'v-data-table' API option
your variables.scss input variable
v-data-table
$data-table-regular-header-height: 2rem;
v-data-table option dense
// all table height(v-data-table option dense)
$data-table-dense-header-height: 2rem;
only table header height, modify '$data-table-dense-row-height'
// basic value
$data-table-dense-row-height: data-table-dense-header-height !default;
other sass option -> vutify site
I've got an SVG that is being drawn inside of a div that has css of display:none. I need to center some of the rendered text elements, and to do this, I need the height and width. Unfortunately, when the containing html element is set to display:none, I always get 0 for height, and width. getBBox(), clientWidth, getComputedTextLength() methods all return zero. My question is: how can text width be calculated under these conditions?
e.g.
<div style='display:none;'>
<svg><g><text>some text</text></g></svg>
</div>
Have you tried setting the <div> to visibility: hidden;?
You may also want to make it position: absolute; so it doesn't affect the layout of other items on the page.
I'm trying to make a series of photos into square photos. They may be rectangular horizontally (i.e. 600x400) or vertically (400x600), but I want to get them to be 175x175 either way. My thought was to max-height or max-width the smaller side, and not allow overflow beyond 175px on the larger side...however, I'm having problems with it.
Is this possible with css?
Below is my attempt, but it giving rectangles still:
<div style="min-height:175px; overflow:hidden; max-height:175px;">
<img style="min-width:175px; overflow:hidden; max-height:175px;" src="/photo.png">
</div>
You can set the width/height of the parent div then set the child img tag to width:100%; height: auto;
That will scale the image down to try to fit the parent with aspect ratio in mind.
You can also set the image as a background-image on the div
Then if you can use css3 you can mess with the background-size property.
It's attributes are: contain, cover, or a specificed height (50%, 50%) (175px, 175px)
You could also try to center the picture with background-position
<div style="background-image:url(some.png); background-size: cover; background-position: 50%">
Here's an up to date and simple answer.
For instance, if you want a squared image inside of a container.
Let's say you want the image to take 100% of the container height and have a dynamic width equal to the height:
.container {
height: 500px; /* any fixed value for the parent */
}
.img {
width: auto;
height: 100%;
aspect-ratio: 1; /* will make width equal to height (500px container) */
object-fit: cover; /* use the one you need */
}
You can switch width and height values (container & image) if you want to base the 100% on the container's width and have a computed height equal to the width.
You can use object-fit, which is widely supported in all major browsers. When set to cover, the browser will crop the image when you set the width and height properties, rather the stretching it.
<img src="whatever.jpg">
img {
width: 175px;
height: 175px;
object-fit: cover;
}
Okay I got this.
Don't know if it's too late or what, but I've come up with a 100% pure CSS way of creating square thumbnails. It's something that I've been trying to find a solution for for quite a while and have had no luck. With some experimentation, I've got it working. The main two attributes to use are OVERFLOW:HIDDEN and WIDTH/HEIGHT:AUTO.
Okay here's what to do:
Let's say you have a batch of images of varying shapes and sizes, some landscape, some portrait, but all, of course, rectangular. The first thing to do is categorize the image links (thumbnails) by either portrait or landscape, using a class selector. Okay, so let's say you want just to create two thumbnails, to make this simpler. you have:
img1.jpg (portrait) and
img2.jpg (landscape)
For HTML it would look like this:
<a class="portrait" href="yoursite/yourimages/img1.jpg"><img src="yoursite/yourimages/img1.jpg /></a>
<a class="landscape" href="yoursite/yourimages/img2.jpg"><img src="yoursite/yourimages/img2.jpg /></a>
So, at this point since there is no css yet, the above code would give you your full-sized image as a thumbnail which would link to the same full-sized image. Right, so here's the css for both portrait and landscape. There are two declarations for each (the link and the link's image):
.landscape {
float:left;
width:175px;
height:175px;
overflow:hidden;
}
.landscape img{
width:auto;
height: 175px;
}
.portrait {
float:left;
width:175px;
height:175px;
overflow:hidden;
}
.portrait img {
width:175px; <-- notice these
height: auto; <-- have switched
}
The most important things are the width and height and the overflow:hidden. Float left isn't necessary for this to work.
In the landscape thumbnail declaration (.landscape) the bounding box is set to 175 x 175 and the overflow is set to hidden. That means that any visual information larger than that containing 175px square will be hidden from view.
For the landscape image declaration (.landscape img), the height is fixed at 175px, which resizes the original height and the width is set to auto, which resizes the original width, but only to the point of relating to the bounding square, which in this case is 175px. So rather than smush the width down into the square, it simply fills the square and then any extra visual information in the width (i.e. the overflow) is hidden with the overflow:hidden.
It works the same way for portrait, only that the width and height is switched, where height is auto and width is 175px. Basically in each case, whatever dimension exceeds the other is set to auto, because naturally the larger dimension would be the one that would overflow outside of the set thumbnail dimensions (175px x 175x).
And if you want to add margins between thumbs, for instance a 5px white margin, you can use the border property, otherwise there will be no margin where the information is overflowing.
Hope this makes sense.
Determine width and height of image, then active portrait or landscape class of the image. If portrait do {height:175px; width:auto}. If landscape, reverse height and width.
I highly suggestion the NailThumb jquery plugin for anyone that is looking to do this. It allows you to create square thumbnails without distortion. http://www.garralab.com/nailthumb.php
This might help.
CSS:
.image{
-moz-border-radius: 30px; /* FF1+ */
-webkit-border-radius: 30px; /* Saf3-4 */
border-radius: 30px; /* Opera 10.5, IE 9, Saf5, Chrome */
}
HTML:
<div class="image"></div>
This worked for me. Just put the URL to the image inside the div.
Trying to conform to unitless line heights I have a problem with overflow: auto and anchor elements.
Consider the following simple page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>test</title>
</head>
<body style="font-family: arial; font-size: 12px; line-height: 1;">
<div id="wrapper" style="overflow: auto; background-color: #FFCCCC;">
<p>Blah blah blah</p>
Test
</div>
</body>
</html>
The combination of font-size: 12px and line-height: 1 should make the height of the paragraph and anchor (without padding, margin and border) 12 pixels.
The total height of the page should therefore be: 4 * 12 = 48 pixels (2 elements plus 2 * 12 pixels margin for the paragraph). However, almost every browser 'reserves' two or three extra pixels for underlining the anchor (even though I used text-decoration: none). Firefox 7, Chrome 14 and Opera 11.51 all show this behaviour, surprisingly IE9 works fine :).
With their respective developer toolbars, you can see that all browsers agree that the div element has a height of 48 pixels, but only IE thinks the anchors height is 12 pixels. Other browsers say 14 or 15 pixels, causing the scrollbar to appear.
When removing the overflow: auto is not an option (in my case the div is generated by a framework and sometimes just contains floating elements, so the overflow is used to extend the div to encapsulate its children), is there any proper solution to this? i.e. better than giving the anchor font-size: 15px or line-height: 1.2 or something.
Cheers,
Moolie
The issue only seems to happen if the a is touching the bottom of #wrapper directly. This means you can solve the problem in 3 ways:
put the link into a paragraph
set display block on the link and give it a margin
set a padding bottom on the wrapper
You'll have to decide if you find these more "clean".