*{
  margin: 0;
  padding: 0;

}
.course-main{
    position: fixed;
    top: 82px;
    background: rgb(186, 182, 182);
    display: flex;
    background: grey;
    height: 600px;
    width: 100%;
}

/* navigation */
.sidebar-course{
    float: left;
    height: 100%;
    padding: 20px;
    width: 20%;
    background: white;
    position: absolute;
    height: 100%;
    z-index: 999;
}
.menu-items{
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}
.item-icon-only{
    display: none;
}
.menu-items li a {
    display: block;
    background-color: grey;
    padding: 8px 16px;
    margin-top: 10px;
    color: white;
    font-weight: bold;
    border-radius: 20px;
    text-align: center;
}
    
.menu-items li a:hover:not(.active) {
    background-color: skyblue;
    color: white;
    font-weight: bold;
    text-align: center;
    border-radius: 20px;
  }

  .menu-title {
    color: lightseagreen;
    font-size: 14px;
    padding: 15px 20px;
  }

/* content */
.course-space{
    left: 20%;
    position: relative;
    height: 100%;
    width: calc(100% - 20%);
    overflow: auto;
    /* overflow: auto; */
}
.course-content{
    height: 600px;
    width: 100%;
    padding: 20px 100px;
    background: rgb(255, 255, 255);
    overflow: auto;
}
.ga-goacademy{
    display: block;
}

.ga-web-devlopment{
  display: none;
}

.course-content.ga-devops{
  display: none;
}

.course-content.ga-python{
  display: none;
}

.course-content.ga-cloud{
  display: none;
}

/* Table of content */
.logo_goacademy {
  font-size: 25px;
  padding: 0 15px;
  text-shadow: 1px 1px 2px rgb(254, 254, 254), 0 0 25px;
}

h1 {
  color: #333;
}

p {
  color: #666;
}

.ga-section {
  margin-bottom: 30px;
}

.ga-section-title {
  font-size: 20px;
  font-weight: bold;
  color: #333;
}

.ga-lesson {
  margin-bottom: 10px;
}

.ga-lesson-title {
  font-size: 16px;
  font-weight: bold;
  color: #333;
}

.ga-lesson-description {
  color: #666;
}

/* media */

@media screen and (max-width: 880px) {
  .course-main{
    position: fixed;
    top: 82px;
    background: rgb(186, 182, 182);
    display: flex;
    background: grey;
    height: 600px;
    width: 100%;
  }
  .sidebar-course{
    float: left;
    height: 100%;
    background-color: white;
  }
  .menu-items li a{
    display: block;
    background-color: grey;
    padding: 10px 1px;
    margin-top: 20px;
    border: 1px solid;
    color: white;
    font-weight: bold;
    border-radius: 50px;
    text-align: center;
  }
  

  .menu-items li a:hover:not(.active) {
    background-color: skyblue;
    color: white;
    font-weight: bold;
    text-align: center;
    border-radius: 20px;
  }

  .ga-item{
        display: none;
  }

  .item-icon-only{
      display: block;
  }
  
  .menu-title {
      display: none;
  }

  .logo_goacademy {
      display: none;
  }
  .course-content{
    height: 600px;
    width: 100%;
    padding: 20px 10px;
    background: rgb(255, 255, 255);
    overflow: auto;
  }
}