Building the grid

After starting my initial experiments/prototypes for the portfolio project from a boilerplate I decided that I wanted to build my own responsive CSS grid from scratch. The grid turned out fairly well although there are some very slight issues with the column alignment which I need to sort out. I also still need to add the mobile device break points. I did find it very helpful to make use of the CSS calc() function to actively resize widths in percentages based on window size (calc()., 2016). This is a fantastic function although the support for it isn’t universal yet (82.73 according to Having said that I did try my grid in Safari to see how it behaved in an unsupported browser and I was pleased with how well it resized. [caption id=“attachment_200” align=“alignnone” width=“919”]

Screenshot showing the issue with column alignment
The coloured overlay is included to highlight the issue with the column alignment.[/caption] [caption id=“attachment_202” align=“alignnone” width=“613”]
Screenshot showing the grid system with a photoshop grid/guides overlaid
I will attempt to use the power of Photoshop to fix my mathematics - here is a newly sized grid overlay using Photoshop guides to figure out the correct calculations.[/caption] Just putting these calculations here for future reference. Columns: Columns = 12 Gutter = 15px Rows: Rows = 12 Gutter = 15px Margins: Top = 10px Left = 20px Bottom = 10px Right = 20px


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Fiona MacNeill
Fiona MacNeill
Learning Consultant &
UX Researcher

Passionate about creating inclusive and accessible experiences, tools, and services for learning and doing.