body {
    background-color: #E6E6E9;
}

.topnav a {
    background-color: #66666E;
    color: #F4F4F6;
    padding: 10px;
    float: right;
    text-decoration: none;
}

.topnav a.active {
    background-color: #000;
}

.immune-box {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    text-align: center;
}

.immune-item {
    text-align: center;
    width: 15%;
    margin: 10px;
}

.immune-item img {
    max-width: 100%;
    height: auto;
}

.cellinfo {
    display: none; /* Changed from none to see it */
    position: absolute;
    padding: 10px;
    right: 10px;
    top: 100px;
    width: auto; 
    border-style: solid;
    border-width: 3px;
}

.section-break {
    flex-basis: 100%;
    width: 100%;
    margin: 20px 0; 
}

/* Color palette: 
    Black: #000000
    Dim Grey: #66666E
    Rosy Granite: #9999A1
    Alabaster Grey: #E6E6E9
    Platinum: #F4F4F6
*/