.header {
    display: block;
    width: 100%;
    top: 0;
    left: 0;
}

.main-header,
.header-middle {
    display: flex;
}

.main-header {
    position: fixed;
    height: var(--header-height);
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.06);
    z-index: 2;
    border-bottom: 1px solid #eee;
}

.header-logo,
.header-logo img {
    height: 100%;
}

.header-logo {
    width: var(--sidebar-width);
}

.header-logo img {
    width: 100%;
}

.header-middle {
    align-items: center;
    width: 10%;
    flex-grow: 1;
}

.header-middle .header-search {
    height: 40px;
    border-radius: 4px;
    background-color: #eee;
    border: 1px solid #eee;
    padding: 10px;
    width: 100%;
    font-size: 1rem;
}

.icon-search:before {
    content: '';
    display: block;
    width: 16px;
    height: 16px;
    background-image: url(../img/icon-search.svg);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}