cycat-project-website/_sass/components/_header-fixed.scss

.header-fixed {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: padding 225ms, box-shadow 225ms, background-color 0.3s;
  .main-menu {
    > ul {
      > li {
        > a {
          &:hover {
            background: $primary;
            color: #ffffff;
          }
        }
      }
    }
  }
}