Create Dynamic Spinners only using CSS

In this blog we will be creating the Pizza Spinner depicted in the Cover Image.

Getting Started

We would be using the following image of a Pizza Slice to generate the entire pizza.

The shell of the HTML would be

<div class="spinner">
  <img src="<link to image>" class="pizza-part pizza-part-1" />
  <img src="<link to image>" class="pizza-part pizza-part-2" />
  <img src="<link to image>" class="pizza-part pizza-part-3" />
  <img src="<link to image>" class="pizza-part pizza-part-4" />
</div>

Breaking Down the Animation

Any complex animation can be broken down into a series of simple animations. Let's breaking down the animation into the corresponding components:

• Each of the pizza slice uses opacity to make the impression of fading in & out
• Each of the pizza slice also uses transform to rotate (to the required position to generate the appearance of a complete pizza) and translate (to generate the animation of picking the slice off the pizza)
• The main container spins about its center making it look even more dynamic

The CSS for the spinner would be

.spinner {
  width: 160px;
  height: 160px;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  animation: spin 4s linear infinite;
}

.pizza-part {
  width: 80px;
  height: 80px;
}

.pizza-part-1 {
  animation: pizza1 2s ease-in-out infinite;
}

.pizza-part-2 {
  animation: pizza2 2s ease-in-out infinite;
}

.pizza-part-3 {
  animation: pizza4 2s ease-in-out infinite;
}

.pizza-part-4 {
  animation: pizza3 2s ease-in-out infinite;
}

/* animations */
@keyframes spin {
  0% {
    transform: rotateZ(0deg);
  }
  100% {
    transform: rotateZ(360deg);
  }
}

@keyframes pizza1 {
  0% {
    transform: translate(-20%, -20%);
    opacity: 0;
  }
  10% {
    transform: translate(0%, 0%);
    opacity: 1;
  }
  50% {
    transform: translate(0%, 0%);
    opacity: 1;
  }
  60% {
    transform: translate(-20%, -20%);
    opacity: 0;
  }
  100% {
    transform: translate(-20%, -20%);
    opacity: 0;
  }
}

@keyframes pizza2 {
  0% {
    transform: translate(20%, -20%) rotateZ(90deg);
    opacity: 0;
  }
  10% {
    transform: translate(20%, -20%) rotateZ(90deg);
    opacity: 0;
  }
  20% {
    transform: translate(0%, 0%) rotateZ(90deg);
    opacity: 1;
  }
  60% {
    transform: translate(0%, 0%) rotateZ(90deg);
    opacity: 1;
  }
  70% {
    transform: translate(20%, -20%) rotateZ(90deg);
    opacity: 0;
  }
  100% {
    transform: translate(20%, -20%) rotateZ(90deg);
    opacity: 0;
  }
}

@keyframes pizza3 {
  0% {
    transform: translate(20%, 20%) rotateZ(180deg);
    opacity: 0;
  }
  20% {
    transform: translate(20%, 20%) rotateZ(180deg);
    opacity: 0;
  }
  30% {
    transform: translate(0%, 0%) rotateZ(180deg);
    opacity: 1;
  }
  70% {
    transform: translate(0%, 0%) rotateZ(180deg);
    opacity: 1;
  }
  80% {
    transform: translate(20%, 20%) rotateZ(180deg);
    opacity: 0;
  }
  100% {
    transform: translate(20%, 20%) rotateZ(180deg);
    opacity: 0;
  }
}

@keyframes pizza4 {
  0% {
    transform: translate(-20%, 20%) rotateZ(-90deg);
    opacity: 0;
  }
  30% {
    transform: translate(-20%, 20%) rotateZ(-90deg);
    opacity: 0;
  }
  40% {
    transform: translate(0%, 0%) rotateZ(-90deg);
    opacity: 1;
  }
  80% {
    transform: translate(0%, 0%) rotateZ(-90deg);
    opacity: 1;
  }
  90% {
    transform: translate(-20%, 20%) rotateZ(-90deg);
    opacity: 0;
  }
  100% {
    transform: translate(-20%, 20%) rotateZ(-90deg);
    opacity: 0;
  }
}

Demo

Project using this Implementation

Pizza Man

Web-app: http://pizza-man-61510.firebaseapp.com/

ruppysuppy / Pizza-Man

🍕🛒 An e-commerce website to order pizza online

Pizza Man Project

An E-Commerce website for ordering Pizza Online

Demo

NOTE: The features shown in the demo is not exhaustive. Only the core features are showcased in the demo.

Tools used

1. React: To create the Single Page App
2. React-Router: For Routing
3. Redux: For State Management
4. Firebase: As a DataBase

Firebase Setup

You need to create a firebase configeration file holding the firebase settings in the path /src/firebase/config.js. The required format is:

const firebaseConfig = {
    apiKey: "API-KEY",
    authDomain: "AUTH-DOMAIN.firebaseapp.com",
    databaseURL: "DATABASE-URL.firebaseio.com",
    projectId: "PROJECT-ID",
    storageBucket: "STORAGE-BUCKET.appspot.com",
    messagingSenderId: "MESSAGING-SENDER-ID",
    appId: "APP-ID",
    measurementId: "MEASUREMENT-ID",
};

export default firebaseConfig;

Data needs to be stored in the following format:

[
    {
        name: "CATEGORY NAME",
        items: [
            {
                desc: "PIZZA DESCRIPTION",
                id: "ID",
                img: "IMAGE LINK",
                name

…

View on GitHub

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FAQ

These are a few commonly asked questions I get. So, I hope this FAQ section solves your issues.

1. I am a beginner, how should I learn Front-End Web Dev?
   Look into the following articles:

   1. Front End Buzz words
   2. Front End Development Roadmap
   3. Front End Project Ideas
   4. Transition from a Beginner to an Intermediate Frontend Developer

2. Would you mentor me?
   
   Sorry, I am already under a lot of workload and would not have the time to mentor anyone.

Comments

[George Francis]

So good!

[Tapajyoti Bose]

Thankyou! :)

[arvindsridharan]

Hey Tap! That's a cool post. Amazing.

[Tapajyoti Bose]

Thanks a lot! :)

[Fernando Boza]

i love it, it's so cute

[Tapajyoti Bose]

Thanks!

[Tapajyoti Bose]

A small suggestion, use svg instead of png (unlike what's done here as dev.to doesn't support svg images in blogs), its smaller in size & scales as well