.mainnav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    list-style-type: none;

}

.mainnav ul li {
    margin-right: 20px;
}


.imgnav {
    text-align: center;
    margin-bottom: 100px;
}

.center-text {
    text-align: center;
}