header {
    width: 100%;
    height: 64px;
    position: fixed;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    text-wrap: nowrap;
    z-index: 9999;
    top: 0;
}
.header-is-not-scroll-top { background-color: #000000 !important; }
.header-is-scroll-top { box-shadow: 0 0 0 0 rgba(0,0,0,.2),0 0 0 0 rgba(0,0,0,.14),0 0 0 0 rgba(0,0,0,.12) !important; }

.header-title {
    font-size: 24px;
}
.header-content {
    display: flex;
    align-items: center;
    z-index: 0;
    padding: 4px 16px;
}
.header-menu {
    padding-bottom: 0.1rem;
    display: flex;
    align-items: center;
    margin-left: 2.0rem;
    margin-right: 2.0rem;
}
.header-menu-item {
    font-size: 0.875rem;
    position: relative;
    display: inline-block;
    line-height: 1;
}
.header-menu-dropbox {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.header-menu-dropbox-title {
    font-size: 0.875rem;
    cursor: pointer;
}
.header-menu-dropbox-container {
    position: absolute;
    margin-top: 2.0rem;
    background-color: #1e1e1e;
    border-radius: 3px;
    opacity: 0;
    transition: opacity .2s;
    flex-direction: column;
    align-items: flex-start;
    display: none;
}
.header-menu-dropbox-item {
    width: 100%;
    padding: 0.8rem 2rem;
    box-sizing: border-box;
}
.header-menu-dropbox-item:hover {
    background-color: #242424;
}

@media (max-width: 768px) {
    .header-content {
        width: 100% !important;
        justify-content: center !important;
    }
    .header-menu {
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
}
@media (max-width: 450px) {
    .header-menu-dropbox-container {
        left: 0;
        right: 0;
    }
}