Pixel to Percentage conversion Convert left and right padding of a div to percentage where padding

Pixel to Percentage
conversion
work with equation width= the target/context formula

Finding the width in percentage of a 200px div inside a 1000px
container:
200 / 1000 = .2
=> Move decimal place over two to the right and this leaves you
with 20% width.
target / context. The context for regular width and for margin is based on the containing
element.

Convert left and right padding of a div to percentage where padding is
10px and element width is 350px and everything is inside a 1000px
container.
• Here we disregard the overall container since we are dealing with padding
leaving us with context being 350px and the target of 10px. Our left and
right padding would then be:
10 / 350 = 0.02857142857142857 (Keep entire decimal to make sure everything is
mathematically perfect) => Move decimal point over two to the right leaving you with
2.857142857142857% left and right padding.

Target/context then move the decimal
two places to the right.
let's say a div is 640px and you need 20px in padding converted to %.
20px/640px = 0.03125 = 3.125%

p
{ margin: 0;
}
body {
color: pink;
}
.container {
max-width: 500px;
}
.icing {
background-color: green; width: 100%; /500px/
}
.cake { background-color: blue; width: 80%; /400px/ }
.filling { background-color: brown; width: 60%; /300px/ }
Divide the width of the image by the width of the
containing element and then times it by 100. So, a
500px image in a 1000px container would be
500/1000=0.5 x 100 = 50%.

If you set the width of an image to 50%, this does not mean that the
image will display at half of its normal size.
• If an image is actually 600 pixels wide, then using a CSS value to display it at 50%
does not mean that it will be 300 pixels wide in the web browser.
• This percentage value is calculated based on the element that contains that image,
not the actual size of the image itself.
• If the container (which could be a division or some other HTML element) is 1000
pixels wide, then the image will display at 500 pixels since that value is 50% of the
container’s width.
• If the containing element is 400 pixels wide, then the image will only display at 200
pixels, since that value is 50% of the container. The image in question here has a
50% size which depends completely on the element which contains it.

Browser windows remain at 2000 pixels wide, but we change the
percentage value of the container to 80% instead of 90%. That means
that it will render at 1600 pixels wide now (2000 x .80 = 1600).

% To Px Converter
There are a lot of ways to convert between percentage and pixels. You can use an online
calculator, or you can do the math yourself. To convert from percentage to pixels, you
need to know the width or height of the element in pixels. Let’s say you have an
element that is 300px wide, and you want to convert a percentage value to pixels.
To do that, you would multiply the percentage by 300. So, if you have a percentage
value of 50%, that would be 50% * 300px = 150px.

What unit you use depends entirely on what you want
to accomplish. The units most used in web layouts
are:
• px - absolute; one pixel
• pt - absolute; 1/72 inch, about 1.3px for screen media
• em - relative to parent font size; 1.0em = size of a character (width of uppercase
M)
• % - relative to parent
You use px for sizes that remain constant, for example a 1px border.
You use em for sizes that should follow the font size, for example a 3.0em margin.
You use % for sizes that should take up a percentage of the parent, for example a
50% width.
For web page layouts you normally use either pixels or percentages depending on
if you want a fixed (pixel) layout or a fluid (percentage) based layout.

When creating a responsive webpage, you generally want to avoid using
fixed dimensions for elements, as this can hinder the adaptability of the
layout to various screen sizes. However, there might be cases where you
still want to set some fixed dimensions while maintaining
responsiveness.

you might use fixed dimensions within a responsive layout:
<style>
body {
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
background-color: #f4f4f4;
}
.container {
width: 80%;
margin: 0 auto;
background-color: #fff;
padding: 20px;
box-sizing: border-box;
}
.fixed-element {
width: 300px; /* Fixed width */
height: 200px; /* Fixed height */
background-color: #3498db;
color: #fff;
text-align: center;
line-height: 200px;
margin: 20px auto;
}
@media only screen and (max-width: 768px) {
/* Adjustments for smaller screens */
.container {
width: 90%;
}
.fixed-element {
width: 100%; /* Full width on smaller screens */
height: auto; /* Auto height based on content */
}
}
</style>
<body>
<div class="container">
<h1>Responsive Webpage with Fixed Dimensions</h1>
<div class="fixed-element">Fixed Element</div>

</div>
</body>

• The .container class is set to 80% of the viewport width, providing a
responsive container.
• The .fixed-element class has fixed dimensions of 300px width and
200px height, creating a fixed-size box within the responsive layout.
• Additionally, a media query is used to make adjustments for smaller
screens (widths up to 768px). In this case, the container width is
increased to 90%, and the fixed element is set to take the full width of
its parent container while adjusting the height automatically based on
content.
Keep in mind that using fixed dimensions may limit the flexibility of
your design on various devices, so it's often a good idea to use them
judiciously and consider alternative layout strategies when necessary.

A percentage-based layout is crucial for creating fluid and responsive designs in CSS. Below is an example
of a simple percentage-based layout where the width of the elements is defined in percentages, making the
layout adaptable to different screen sizes.
<style>
body {
margin: 0;
padding: 0;
}
.container {
width: 80%; /* Container takes 80% of the viewport width */
margin: 0 auto; /* Center the container */
padding: 20px;
}
.column {
width: 45%; /* Each column takes 45% of the container width */
float: left;
margin-right: 5%; /* Add some spacing between columns */
color: #fff;
text-align: center;
padding: 20px;
}
/* Clearfix to ensure container expands to contain floated columns */
.container::after {
content: "";
display: table;
clear: both;
}
.container {
width: 90%; /* Container takes 90% of the viewport width on smaller screens */
}
.column {
width: 100%; /* Each column takes full width on smaller screens */
margin-right: 0; /* No spacing between columns on smaller screens */
}
}
</style>
</head>
<body>
<div class="column">Column 1</div>
</div>
</body>
The .container class takes 80% of the viewport width, providing a responsive container.
The .column class has a width of 45% with some spacing between columns. On smaller screens (up to 768px), it adjusts to take the full width, and the spacing between
columns is removed.
This percentage-based layout ensures that the columns adapt to different screen sizes while maintaining a proportional relationship to the container width. The use of a
media query further enhances the responsiveness of the layout for smaller screens. Adjust the percentages and styles based on your specific design requirements.

Pixel to Percentage conversion Convert left and right padding of a div to percentage where padding

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