block15.javascript

//Preloader.js

import React, { Component } from 'react';
import styled from 'styled-components';
import { Motion, spring } from 'react-motion';
import './App.css';

const Loader = styled.div`
  border: 16px solid #f3f3f3;
  border-radius: 50%;
  border-top: 16px solid #3498db;
  margin: 0 auto;
  width: 180px;
  height: 180px;
  transform: rotate(${props => props.transform}deg);
}
`;
// ...