.fix-head{
    display: flex;
    position: fixed;
    justify-content: space-between;
    width: 100%;
    z-index: 5;
    background: white;
    height: 3rem;
}
.fix-nav {
    display: flex;
    position: fixed;
    z-index: 4;
    width: 100%;
    padding-top: 3rem;
}
.jumbotron {
    padding-top: 8rem;
}
.head-margin {
    padding-top: 8rem;
}