How to set responsive height and width in CSS? (2023)

How to set responsive height and width in CSS?

To make an image responsive, you need to give a new value to its width property. Then the height of the image will adjust itself automatically. The important thing to know is that you should always use relative units for the width property like percentage, rather than absolute ones like pixels.

Syntax: To set a div element height to 100% of the browser window, it can simply use the following property of CSS: height:100vh; Example: HTML.

Percentage(%) unit

It is relative to its parent element. Percentage is primarily associated with height and width of an element, but can be used anywhere where CSS length units are allowed. Percentage is one of the most useful units for creating a responsive or fluid layout.

For the height of a div to be responsive, it must be inside a parent element with a defined height to derive it's relative height from. If you set the height of the container holding the image and text box on the right, you can subsequently set the heights of its two children to be something like 75% and 25%.

Example: In the following example, all three HTML “div” blocks are aligned horizontally. But whenever the screen size is reduced below “500px”, all the three blocks will automatically align vertically. The width property for the “div” element in the @media query for screen size is set to less than or equal to “500px”.

It's best to make your website at least 1920px wide.

A 1280px website will look great on laptops and mobile devices but not so great on large monitors. To ensure your site looks just as good on big screens as it does on small screens, set your max site width to 1920px or more.

Here's how to create responsive background images with CSS: Use the background-size property to encompass the viewport. Give this property a cover value that will tell a browser to scale the background image's heights and width so that they always remain equal to or greater than the height/width of the device viewport.

The Simple Solution Using CSS

By setting the width property to 100%, you are telling the image to take up all the horizontal space that is available. With the height property set to auto, your image's height changes proportionally with the width to ensure the aspect ratio is maintained.

How do I resize an image without losing quality CSS?

Use object fit property in your css, and give a fixed width and height to your image tag or respective class so that every image will have same width and height, Now Your Image won't be distorted.

For proportional resizing purposes, it makes matters extremely simple: Define the width of an element as a percentage (eg: 100%) of the parent's width, then define the element's padding-top (or -bottom) as a percentage so that the height is the aspect ratio you need. And that's it!

scale() The scale() CSS function defines a transformation that resizes an element on the 2D plane. Because the amount of scaling is defined by a vector, it can resize the horizontal and vertical dimensions at different scales. Its result is a <transform-function> data type.

The max-width CSS property sets the maximum width of an element. It prevents the used value of the width property from becoming larger than the value specified by max-width .

Responsive design refers to a site or application design that responds to the environment in which it is viewed. It encompasses a number of CSS and HTML features and techniques and is now essentially just how we build websites by default.

W3. CSS is a free CSS Framework that offers Responsive Design by default.

The main difference between inline CSS and external CSS is that inline CSS is processed faster as it only requires the browser to download 1 file while using external CSS will require downloading HTML and CSS files separately.

The 3 Major Principles of Responsive Design

Fluid Grid Systems. Fluid Image Use. Media Queries.

Responsive web design is divided into three main components: the media query, the web browser, and the responsive web interface itself.

Use Minimum Width Breakpoints

For the responsive design best practice, use min-width and max-width values, the minimum and maximum width of pixels used across a screen. To use breakpoints, we recommend starting the design process from each min-width of your breakpoints.

How do I make my body full screen in HTML?

If you set the width to 100% on the body element you will have a full page width. This is essentially equivalent to not setting a width value and allowing the default. If you want to use the body element as a smaller container and let the HTML element fill the page, you could set a max-width value on the body.

The width property is used to fill a div remaining horizontal space using CSS. By setting the width to 100% it takes the whole width available of its parent. Example 1: This example use width property to fill the horizontal space. It set width to 100% to fill it completely.

Using CSS, you can set the background-size property for the image to fit the screen (viewport). The background-size property has a value of cover . It instructs browsers to automatically scale the width and height of a responsive background image to be the same or bigger than the viewport.

One can easily test the Responsiveness of a locally hosted website using the Toggle device toolbar option available in the developer tools of the browser. One can use the shortcut F12 to start developer tools in both Chrome and Firefox and then press on the Toggle device toolbar.

min-width:100% makes sure the element is at least as wide as its container. width: auto allows the element to keep its original size.

To insert a breakpoint at 600px , create two media queries at the end of your CSS for the component, one to use when the browser is 600px and below, and one for when it is wider than 600px . Finally, refactor the CSS. Inside the media query for a max-width of 600px , add the CSS which is only for small screens.

When to use which: min-width or max-width. If you are designing your website for smaller devices first then set your default CSS breakpoints with min-width and adjust for larger devices accordingly. Meanwhile, if you are designing for larger devices first then use max-width and then tune for smaller devices accordingly ...

What is Responsive Resize? This feature allows you to easily resize interface elements for different screen sizes. When used correctly, it can help you drop a layout from tablet to mobile simply by shrinking the width of your artboard.

The responsive breakpoints that we recommend building to these days are 360px for mobile, 768px for tablet and 1366px for desktop.

How do I maintain the aspect ratio of a background image in CSS?

Have a div with an img tag inside, set the img src to your image url but set 'visibility' to hidden. Then set the background image url of the containing div to your image url as well and background size to contain.

One way to do this is to use a program like Photoshop. With Photoshop, you can resize an image without losing quality by using the "Image Size" dialog box. In the "Image Size" dialog box, you can change the width and height of the image. You can also change the resolution.

Aspect ratios and responsive design

Responsive design helps you maintain a specific shape for images and video across multiple devices. To achieve this, images and videos will have a specific aspect ratio in the CSS. This ensures that the meaning of your content does not change because of an image being cropped.

If the Shift key is held down whilst moving the handle, then the proportions of the object will be preserved. For example, if I hold Shift and drag the bottom edge upwards to reduce the size by half, then the right edge will automatically move to the left to reduce the width of the object by the same amount.

The matrix() function is an alternative to the two-dimensional transform functions rotate() , skew() , scale() , and translate() . In other words, you can use the matrix() function instead of those functions.

CSS transforms allow you to move, rotate, scale, and skew elements.

Should you use 100% width?

In many cases, applying width: 100% to a block level element is either unnecessary or will bring undesirable results. If you're using padding on the inner element and you use box-sizing: border-box , then you'll be safe.

The difference between using width: 100vw instead of width: 100% is that while 100% will make the element fit all the space available, the viewport width has a specific measure, in this case the width of the available screen, including the document margin.

CSS Demo: max-height

This is a box where you can change the maximum height. This will limit how tall the box can be, potentially causing an overflow. max-height overrides height , but min-height overrides max-height .

The CSS Media Query can be used to make an HTML “div” responsive. The media queries allow the users to change or customize the web pages for many devices like desktops, mobile phones, tablets, etc without changing the markups.

Define some width on your container and set margin top & bottom to some desired value and left & right values to auto so that it will always split the remaining space on the both sides equally.

For the height of a div to be responsive, it must be inside a parent element with a defined height to derive it's relative height from. If you set the height of the container holding the image and text box on the right, you can subsequently set the heights of its two children to be something like 75% and 25%.

In the HTML, put the player <iframe> in a <div> container. In the CSS for the <div>, add a percentage value for padding-bottom and set the position to relative, this will maintain the aspect ratio of the container. The value of the padding determines the aspect ratio. ie 56.25% = 16:9.

Use object fit property in your css, and give a fixed width and height to your image tag or respective class so that every image will have same width and height, Now Your Image won't be distorted.

How do I force a div to full width?

The width property is used to fill a div remaining horizontal space using CSS. By setting the width to 100% it takes the whole width available of its parent. Example 1: This example use width property to fill the horizontal space. It set width to 100% to fill it completely.

Using PX can be problematic for responsive sites, but they are useful for maintaining consistent sizing for some elements. If you have elements that should not be resized, then using PX is a good choice.