body {
    background-color: lightblue;
}
h1 {
    color: navy;
    margin-left: 20px;
    text-align: center;
}

h2 {
    color: navy;
    margin-left: 18px;
    text-align: center;
}

div {
    border: 2px solid;
    padding: 20px; 
    width: 600px;
    resize: horizontal;
    overflow: auto;
    align-items: center;	
}

a:link {color:#0000FF; text-decoration:none;}
a:visited {color:#0000FF; text-decoration:none}
a:hover {font-size:150%; color:#0F0F0F; text-decoration:underline;}
a:active {color:#FF00FF; text-decoration:underline;}

table {
     border-collapse: collapse;
}

table, th, td {
     border: 1px solid green;
}

th {
    background-color: green;
    color: white;
}


.center {
    margin-left: auto;
    margin-right: auto;
    width: 80%;
    background-color: #b0e0e6;
}

p.main {
    text-align: justify;
}