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                <html lang="en">
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <link rel="stylesheet" href="style.css">
  <link href="" rel="stylesheet">

  <div class="box">
    <h1>Hover Over Me!</h1>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.</p>
    <br><button>Pen Created By Avi Thour</button>




                body {
  background: #f0f0f2;
  font-family: 'Hind Siliguri', sans-serif;

.box {
  background: white;
  margin: auto;
  margin-top: 5%;
  max-width: 30%;
  padding: 20px 50px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  transition: all 0.3s cubic-bezier(.25,.8,.25,1);

.box:hover {
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
  animation-name: example;
  animation-duration: 0.25s;
  border-left: 8px solid red;
  box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);

button {
  background: red;
  color: #f0f0f2;
  border-radius: 5px;
  padding: 5px;

button:hover {
  border-right: 2px solid black;

h1 {
  text-transform: uppercase;

p {
  text-align: justify;

@keyframes example {
    0%   {border-left: 2px solid #ffffff;}
    25%  {border-left: 3px solid #ffe6e6;}
    50%  {border-left: 4px solid #ff8080;}
    100% {border-left: 5px solid #ff0000;}