percent width layout. The size of your image is counted as 100%. To reduce image 2 times enter 50 and to enlarge 2 times - set 200. From w3schools :. The width and height attributes in HTML specify the size of an image in pixels. In HTML5, the value must be in pixels. This pixel width of this slot could hence calculate to anywhere between roughly 570px and 860px. If you set both to "100%", the image will be stretched. it won't increase in size to fit the container). However, if the image is smaller than its container, it will be displayed at its true size (i.e. In HTML 4.01, the height could be defined in pixels or in % of the containing element. This wikiHow teaches you how to specify the size of an image in your HTML code. In this example, the nav content starts to wrap in a displeasing way when the window is too narrow. We saw something like this in our earlier example, where we created a “slot” size that is active between 40rem and 60rem viewport width, and lays out an image with a width of 90vw. The limitations for responsive images have been known for a long time and many workarounds, including the so-called padding-bottom hack, have been created to work around the issue.This uses the fact that padding percentages (including padding-bottom) are always based on the container width (to ensure a consistent padding even if height and width differ). The resize property will not work if width and height of image defined in the HTML. First table is only 100 pixel width in any changes in browser window state, while other table will always stretch the full width of the window it is viewed in, that is the table automatically expands as the user changes the window size when you set width in % . Auto resize an image (img) to fit into a smaller Div can be achieved through simple CSS or CSS3. Until relatively recently, serving different images based on screen size or pixel density was not something that was done at all. Syntax: img { max-width:100%; height:auto; } Width can also be used instead of max-width if desired. To reduce the image size in pixels, for example, by 20%, type 80, and to enlarge by 20% enter 120. Working Around The Problem. Tested on Opera 9.25, IE 7.0, and Firefox 2.0 But If you click the save button, your code will be saved, and you get a URL you can share with others. The