Site Title Not Navigating to Home

whale-glockenspiel-af3h.squarespace.com

password: writer 

Hi! When you click on the site title currently, it does not take you back to the homepage- so I am trying to figure out why. I'm assuming it may have something to do with coding I am using to create a spilt navigaton, here is the code: 

/*Make split navigation in Header*/
.header-nav {
    position: absolute;
    top: 5px;
    bottom: 0;
    margin-top: 0!important;
    margin-left: -0px!important;
}

.header-nav-item:nth-of-type(1) {
    margin-right: 700px!important;
}

.header-title-logo a {
    z-index: 1000;
    position: relative;
}

Any tips??

@Ziggy Thank you Ziggy, you are a life saver 🙂