header{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header nav ul{
    display: flex;
    justify-content: flex-start;
    list-style: none;
}
header nav ul li{
    width: 120x;
    text-align: left;
}
header nav ul li .menu{
    color: black;
    text-decoration: none;
    display: block;
    padding: 1em;
}
header nav ul li .menu:hover{
    background-color: rgb(192, 199, 188);
}
header nav ul li .menu::before{
    content:"";
    display: block;
    margin: 0 auto 1px;
    width: 28px;
    height: 28px;
    background-repeat: no-repeat;
    background-size: contain;
}
header nav ul li .home-icon::before{
    background: url(../img/home.svg);
}
header nav ul li .bread-icon::before{
    background: url(../img/bread.svg);
}
header nav ul li .calendar-icon::before{
    background: url(../img/calendar.svg);
}
header nav ul li .topics-icon::before{
    background: url(../img/dog.svg);
}
header nav ul li .notice-icon::before{
    background: url(../img/notice.svg);
}