Frontend Mentor - Body Mass Index Calculator solution

This is a solution to the Body Mass Index Calculator challenge on Frontend Mentor. Frontend Mentor challenges help you improve your coding skills by building realistic projects.

Table of contents

• Overview
  • The challenge
  • Screenshot
  • Links
• My process
  • Built with
  • What I learned
  • Useful resources
• Author

Overview

The challenge

Users should be able to:

• Select whether they want to use metric or imperial units
• Enter their height and weight
• See their BMI result, with their weight classification and healthy weight range
• View the optimal layout for the interface depending on their device's screen size
• See hover and focus states for all interactive elements on the page

Screenshot

Links

• Solution URL: https://github.com/srijanss/bmi-calculator
• Live Site URL: https://srijanss.github.io/bmi-calculator/

My process

Built with

• Semantic HTML5 markup
• CSS custom properties
• Flexbox
• CSS Grid
• Mobile-first workflow
• Vite - Lightweight frontend tooling
• PostCSS - Tool to transform CSS using plugins

What I learned

• I learned about the css to hide the spin button of input type number in different browsers

& input[type="number"] {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: textfield;

  &::-webkit-inner-spin-button,
  &::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
  }
}

-- I also learned how to apply different border radius to the div element. This was the result of many hit and trials

& #bmi-calculator-info {
  --circle-radius: 150px;
  border-radius: 16px var(--circle-radius) var(--circle-radius) 16px;
}

• I also learned about how to apply multiple linear gradients to create the background effect like the design

@define-mixin bmi-app-gradient {
  background-image: linear-gradient(
    to left top,
    #d6e6fe 0%,
    #d6fcfe50 50%,
    #d6fcfe00 100%
  );
}
#curved-background {
  width: 100%;
  height: 640px;
  position: absolute;
  top: 0;
  left: 0;
  @mixin bmi-app-gradient;
  border-radius: 0 0 35px 35px;
  background-color: var(--color-white);
  z-index: -1;
}

Useful resources

• Accessibility ARIA
• Weight converter
• Conversion of Units
• BMI calcuation

Author

• Website - Srijan Manandhar
• Frontend Mentor - @srijanss