*{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}
.banner{
    width: 100%;
    height: 100vh;
    background-image: linear-gradient(rgba(0,0,0,0.75),rgba(0,0,0,0.75)),url(../images/b1.jpg);
    background-size:inherit;
    background-position: center
}
.navbar{
    width: 85%;
    margin: auto;
    padding: 35px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.navbar ul li{
    list-style: none;
    display: inline-block;
    margin: 0 20px;
    position: relative;
    
}
.navbar ul li a{
    text-decoration: none;
    color: azure;
    text-transform: uppercase;
}
.navbar ul li::after{
    content: '';
    height: 3px;
    width: 0;
    background: #009688;
    position: absolute;
    left: 0;
    bottom: -10px;
    transition: 0.5s;
}
.navbar ul li:hover::after{
    width: 100%;
    
}
h1{
    position: relative;
    color: whitesmoke;
    text-align: center;
    font-size: 50px;
    font-family: 'Brush Script MT', cursive;
    text-transform: capitalize;
    
}
p{
    color: whitesmoke
}
h3{
    color: aquamarine;
    text-align:center;
}
h2{
    color: whitesmoke
}
tr{
    color: whitesmoke;
    margin:auto;
    
    
}
li{
    color: whitesmoke;
    text-align:center;
}
tb
{
    color: white
}
div.banner{
    margin:auto;
}
div.box{
    background-color: transparent;
    text-align: center; 
    border-style: solid;
    border-color:aquamarine;
    border-radius: 20px;
    margin: 100px;
    padding:2px;
}


div.topic{
    background-color: transparent;
    text-align: center; 
  
   
}
table{
    margin-left: auto;
    margin-right: auto;
    border-color: aquamarine;
    border-radius: 20px;
    border-style: solid;
}
table1{
     margin-left: auto;
    margin-right: auto;
    border-color: aquamarine;
    border-radius: 20px;
    border-style: solid;
}
img{
    width: 400px;
    
}
td{
    text-align: center;
}
section{
    text-align: center;  
}
p{
    text-align: center;
}
.sidebar {
  height: 100%;
  width: 160px;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color:transparent;
  overflow-x: hidden;
  padding-top: 16px;
}
.sidebar a {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 20px;
  color: #818181;
  display: block;
}
.sidebar a:hover {
  color: #f1f1f1;
}
.main {
  margin-left: 160px; 
  padding: 0px 10px;
}
@media screen and (max-height: 450px) {
  .sidebar {padding-top: 15px;}
  .sidebar a {font-size: 18px;}
}