form{
    border: 2px solid black;
    height: 450px;
    width: 250px;
    padding-left: 10px;
    margin-left: 600px;
}
nav {
    background-color: #333;
    overflow: hidden;
}

nav a {
    text-decoration: none;
    padding: 20px;
    text-align: center;
    float: left;
    color: white;
}
#a{
    width: 240px;
}
#b{
    width: 240px;
}
#c{
    width: 240px;
}
#e{
    background-color: green;
    width: 240px;
    text-align: center;
    color: white;
}
#g{
    width: 240px;
}
footer {
    background-color: #333;
    overflow: hidden;
}

footer a {
    text-decoration: none;
    padding: 20px;
    text-align: center;
    float: left;
    color: white;
}
h2{
    text-align: center;
}
.a:hover{
    background-color: blue;
}