.header{
    height: 55px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    align-content: space-between;

    position: fixed;
    top: 0px;
    left:0px;
    right: 0px;
    z-index: 100;

    margin-left: 3vw;
    margin-right: 3vw;
    padding-top: 3vh;

    background-color: none;
    border-bottom-width: 3px;
    border-bottom-style: solid;
    border-bottom-color: #696969;
    /* font-size: 20px; */
}


.header-logo{
    /* width: 70px; */
    display: flex;
    /* flex: 1; */
    width: 80px;
    height: 100%;
    align-items: center;
    background-image: url('../images/fox-doodle-waving.png');
    background-size: contain;
    background-repeat: no-repeat;
}

.header-logo:hover{
    background-image: url('../images/fox-doodle-waving.gif');
}

.header-navbar{
    display: flex;
    flex: 500px;
    flex-grow: 0;
}

.header-navbar ul{
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    flex-wrap: nowrap;
    list-style-type: none;
    text-decoration: none;
    margin: 0 auto;
    padding: 0;
    width: 100%;
}

.header-navbar ul li a{
    display: inline-block;
    color: #000;
    text-decoration: none;
    position: relative;
    padding: 0.1em 0.4em;
    transform: skew(0deg);
    transition: color 0.3s ease, transform 0.3s ease;
}

.header-navbar ul li a:hover{
    color: #696969;
    transform: skew(-10deg);
}

.header-navbar ul li a span{
    display:inline;
    position:relative;
}
.header-navbar ul li a span::after{
    content: '';
    position: absolute;
    left: 50%;
    bottom: -3px;
    width: 0;
    height: 3px;
    background: #696969;
    transform: translateX(-50%);
    transition: width 0.3s ease;

}

.header-navbar ul li a:hover span::after{
    width: 100%;
}