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HTML

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About the <head>

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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HTML 

              
                <div id="app" class="flex w-screen h-auto p-4">
	<div class="w-1/4 h-full bg-grey-darkest"></div>
	<div class="flex-col w-1/2 h-full bg-grey-lightest rounded-lg overflow-scroll p-2 shadow-md">
		<h1 class="flex-1 font-sans font-thin text-center text-5xl text-grey-darkest">Todos</h1>
		  <div class="flex items-center border-b border-b-2 border-teal py-2">
			<input class="font-sans font-thin text-2xl appearance-none bg-transparent border-none w-full text-grey-darker mr-3 py-1 px-2 leading-tight focus:outline-none" 
				   type="text" 
				   placeholder="New Todo" 
				   aria-label="Full name"
				   v-model="newTodo"
				   @keypress.enter="addTodo(newTodo)"
				   >
			<button class="flex-no-shrink bg-purple hover:bg-purple-dark border-purple hover:border-purple-dark text-sm border-4 text-white py-1 px-2 rounded" 
					type="button"
					@click="addTodo(newTodo)"
					>
			  Add
			</button>
			<button class="flex-no-shrink border-transparent border-4 text-red hover:text-teal-darker text-sm py-1 px-2 rounded" 
					type="button"
					@click="cancelTodo()"
					>
			  Cancel
			</button>
		  </div>
		<template v-if="todos.length == 0">
			<h3 class="flex-1 font-sans font-thin text-center text-3xl text-grey-darker bg-teal-lighter p-4 m-1">No Todos</h3>
		</template>
		<template v-else>
			<div class="flex bg-grey-light w-full h-auto p-2 mt-4 rounded-lg" v-for="(todo, index) in todos" :key="index">
				<h3 class="w-5/6 font-sans font-light text-2xl text-center bg-grey-lightest pt-1 shadow-md rounded-lg">{{ todo }}</h3>
				<div class="w-1/6 text-right pr-2 xHolder">
					<i class="fa fa-times text-2xl" aria-hidden="true" @click="removeTodo(index)"></i>
				</div>
			</div>
			<button class="w-full bg-red-light hover:bg-red text-white font-thin py-2 px-8 mt-4 rounded"
					@click="clearAll()"
					>
				Clear All
			</button>
		</template>
	</div>
	<div class="w-1/4 h-full bg-grey-darkest"></div>
</div>
!

CSS 

              
                html {
	background-color: #e6e6e6;
	font-size: 12pt;
}

.xHolder {
	padding-top: .4rem;
	color: #EF5753;
	font-size: 2rem;
	transition-duration: .5s;
}

.xHolder i:hover {
	transition-duration: .5s;
	color: red;
	transform: rotate(90deg);
	font-size: 2.5rem;
	cursor: pointer;
}
!

JS 

              
                let app = new Vue({
	el: '#app',
	data: {
		newTodo: '',
		todos: []
	},
	methods: {
		addTodo (todo) {
			this.todos.push(todo)
			this.newTodo = ''
		},
		cancelTodo () {
			this.newTodo = ''
		},
		removeTodo (index) {
			this.todos.splice(index, 1)
		},
		clearAll () {
			this.todos = []
		}
	}
})
!
999px

Console