body
{
    font-family: Arial;
}
header {
    text-align: center;
    padding-bottom: 5px;
}
nav
{
    padding: 5px;
    background-color: beige;
    border-radius: 15px; 
    text-align:center;
}

a:link {
    color:black;
    text-decoration:none;
}
a:visited {
    color:purple;
}
a:hover {
    color:blue;
    text-decoration:underline;
}

a#active {
    color:green;
    font-weight:bold;
}

.center {
    text-align: center;
}

.centerimg {
    display:block;
    margin-left:auto;
    margin-right:auto;
}

.removespace {
    line-height: 5%;
}

table, th, td {
    border:1px solid black;
}
.container {
    max-width: 900px;
    margin: 30px auto;
    background: #ffffffc4;
    padding: 15px;
    border-radius: 15px;
    box-shadow: 5px 5px 20px rgba(0, 0, 0, 0.8);
}