body { 
    color: white;
    background: black; 
    font-family: Arial;
    margin-top: 20%;
    margin-bottom: 20%;
    margin-left: 5%;
    margin-right: 5%;
}

#introimages {
    text-align: center;
    margin-bottom: 10px;
}

div.linkimage {
    text-align: center;
    margin-right: 10px;
}

.center {
    text-align: center;
}

.noborder {
    border: 0;
}