title: How to create a button that can be used with embed code?
body: <p>I am working on a project where I need to create an embeddable button. I just want to give some code to the clients and ask them to put it where they want the button to appear on their websites. What is the best approach to it? As an example please see the following image:</p>
  
  <p><img src="https://i.stack.imgur.com/tYihV.png" alt="From OpenCal"></p>
  
  <p>I will be really thankful if someone can provide some example code.</p>