* {
    box-sizing:border-box;
}

.Navigation-bar {
   display: flex;
   max-width: 960px;
   margin-left: auto;
   margin-right: auto;
   font-size: 16px;
   justify-content: space-between;
   align-items: stretch;
   
}

.cluster {
    display: flex;
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 20px;
    float:right;
}