nav {
    float: right;
	padding-right: 20px;
  }
  
nav li {
    display: inline-block;
    margin-left: 20px;
  }
  
nav a {
    color: #2b4268;
    text-decoration: none;
    font-size: 15px;
  }
nav a:hover {
    color: #392562;
  }
body{
    color: #392562;
    background-color: #7997c6;
  }
h1{
    text-align: center;
    font-size: 36px;
}
main{
    text-align: center;
    padding-left: 20px;
    padding-right: 20px;
    font-size: 18px;
}
#slider {
    display: flex;
    width: 100%;
    overflow: hidden;
  }
  
  #slider img {
    flex-shrink: 0;
    width: 100%;
    height: auto;
  }
  
  #prevBtn, #nextBtn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2em;
    background: none;
    border: none;
    cursor: pointer;
  }
  
  #prevBtn {
    left: 0;
  }
  
  #nextBtn {
    right: 0;
  }