:root {
  --menu_height: 75px;
}

/**** Structure ****/
.menu {
    height: var(--menu_height);
    width: 100%;
}
.menu.sticky {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}
.menu.nosticky {
    position: relative;
    width: 100%;
}
.menu {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}
.menu {
    box-sizing: border-box;
    padding: 0 3em;
}
@media screen and (max-width: 1024px) {
    .menu {
        padding: 0 1.5em;
    }
}

/**** Background ****/
.menu .background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}
.menu .background {
    width: auto;
    height: var(--menu_height);
}
.menu .background.sticky {
    box-shadow: 0 0 10px 0 #000;
    animation: FadeInDown .5s;
}
.menu .background.transparent {
    background: transparent;
}
.menu .background.colorful {
    background: var(--gradient__2);
}