* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background-image: linear-gradient(120deg, #2980b9, #1abc9c);
  }
  
  a {
    text-decoration: none;
  }
  .container1 {
    max-width: 1170px;
    width: 100%;
    padding: 0 15px;
    margin: 0 auto;
  }
  header {
    height: 65px;
    width: 100%;
    background-color: rgba(34, 49, 52, 0.9);
    position :fixed;
    top: 0;
    z-index: 10;
  }
  
  .logo {
    width: 25%;
    margin-top: 5px;
  }
  
  .header-left {
    float: left;
  }
  
  .header-right {
    float: right;
    margin-right: -25px;
  }
  .header-right a {
    line-height: 65px;
    padding: 0 25px;
    color: white;
    display: block;
    float: left;
    transition: all 0.5s;
  }
  
  .header-right a:hover {
    background-color: rgba(255, 255, 255, 0.3);
  }

  .active{
	border-bottom: 1px solid #fff;
}
.lesson-wrapper {
    padding-bottom: 80px;
    padding-left: 5%;
    padding-right: 5%;
    background-color: #f7f7f7;
    text-align: center;
  }
  
  .heading {
    padding-top: 80px;
    padding-bottom: 50px;
    color: #5f5d60;
  }
  
  .heading h2 {
    font-weight: normal;
  }
  
  .lesson {
    float: left;
    width: 25%;
  }
  
  .lesson-icon {
    position: relative;
  }
  
  .lesson-icon p {
    position: absolute;
    top: 44%;
    width: 100%;
    color: white;
  }
  
  .text-contents {
    width: 80%;
    display: inline-block;
    margin-top: 15px;
    font-size: 15px;
    color: #fff;
  }
  
  .heading h3 {
    font-weight: normal;
  }