.head {
    background-color:grey;
}

.footer {
    background-color:grey;
}

.topnav {
    overflow:hidden;
    background-color:grey;
}

.center {
        text-align:center;
}

.about {
    
    box-shadow: 1px 1px 2px ;
}

.mission {
    font-weight:"bolder";
}

.centertable {
  margin-left: auto;
  margin-right: auto;
}



.topnav a {
    float: left;
    color: darkblue;
    text-align: center;
    padding: 16px 24px;
    font-size: 17px;
    text-decoration: none;
    display: block;
}

.topnav a:hover {
    background-color:white;
    color:darkblue;
}

.topnav a.active {
    background-color: Gainsboro;
    color:black;
}

details > p {
    padding-left: 36px;
    box-shadow: 1px 1px 2px ;
}