.mainimg{
            
    display: block;
margin-left: auto;
margin-right: auto;
height: 300px;

}

    table,td,th {
        border: 3px inset black;
border-radius: 5px;
border-collapse: collapse;

    }
   
.tableimage{
    width:20px;
}
body{
    background-color: blue;
    
}
div{
    margin: 0px;
    background-image: linear-gradient(to left,blue,white);
}

#navBar{
    background-image: linear-gradient(to right,white,blue);
    
}
#header{
background-color: blue;
width:100%;
}
.body{
    background-color: white;
}
a{
    color:black;
    
}
 body{
     background-repeat: repeat;
       background-image: linear-gradient(to right,white,blue);
        
        background-position:center;
        
         }
 img{
    width:700px; 
    
    display: block;
   margin-left: auto;
    margin-right: auto;
    }
    img{
    width:400px; 
    
    display: block;
   margin-left: auto;
    margin-right: auto;
    }
h1{
    text-align:center;
}
a:link {
  background-color: transparent;
  color:teal;
}

a:visited {
  background-color: green;
}

a:hover {
  background-color: #FFC0CB;
}

a:active {
  background-color: green;
}
.dropbtn {
    background-color: #3498DB;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
    
}
.grow {
  transition: all .2s ease-in-out;
}


/* Dropdown button on hover & focus */
.dropbtn:hover, .dropbtn:focus {
    background-color: #2980B9;
}

/* The container <div> - needed to position the dropdown content */
.dropdown {
    position: relative;
    display: inline-block;
    
}

/* Dropdown Content (Hidden by Default) */
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f1f1f1;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
    
    
}

/* Links inside the dropdown */
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

/* Change color of dropdown links on hover */
.dropdown-content a:hover {
    background-color: #ddd;
}

/* Show the dropdown menu (use JS to add this class to the .dropdown-content container when the user clicks on the dropdown button) */
.show {
    display: block;
}