header{
    position: sticky;
    top: 0;
    display: flex;
    flex-wrap: wrap;
    z-index: 1000;
    width: 100%;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom: 0.0625rem solid rgb(5, 5, 90);

    justify-content: center;
    font-size: 1.3rem;
    height: 3.5rem;
}

.navlist{
    display: flex;
    gap: 2.5rem;
}

.navlist a{
    font-size: 1.5rem;
}

header a{
    color: rgb(32, 32, 32);
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bolder;
}

header a:hover{
    text-decoration: underline;
    color: rgb(0, 0, 175);
}

.menubox, .logo{
    display: none;
}

.navlist_mobile{
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;

    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 2.5rem;
    margin-top: 0.3rem;
    padding-bottom: 1rem;
    margin: auto;

    flex-direction: column;
    justify-content: center;
    background: rgba(255, 255, 255, 0.90);
    box-shadow: 0 4px 4px rgba(0, 0, 0, 0.397);
    text-align: center;
    z-index: 1500;

    display: none;
}

.navlist_mobile a{
    width: 100%;
}

.closebox{
    border-top: 2px solid rgb(24, 24, 122);
    padding: 0 3rem;
}

@media(max-width: 600px){

    .header{
        display: flex;
        align-content: center;
        height: 4.5rem;
    }

    .navlist a{
        font-size: 1.6rem;
    }

    header .navlist{
        display: none;
    }

    .logo{
        display: initial;
        height: 40x;
        width: 60px;
        margin-bottom: 0.3rem;
    }

    .menubox{
        display: initial;
        margin-left: 55%;
    }
}