body {
    --color1: rgb(0, 0, 0) ;
    --color2: #ffffff;
}

.nav-bar {
    width: 100%;
    display: flex;
    justify-content: start;
    align-items: center;
    list-style: none;
    position: relative;
    background-color: var(--color1);
    padding: 12px 20px;
    z-index: 1;
    position: fixed;
}
.logo img {width: 40px;}
.menu {
    display: flex;
    margin-right: 40px;
}
.menu li {
    padding-left: 15px;
    font-size: 30px;
}
.menu li a {
    display: inline-block;
    text-decoration: none;
    color: var(--color2);
    text-align: center;
    transition: 0.15s ease-in-out;
    position: relative;
    text-transform: uppercase;
}
.menu li a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color2);
    transition: 0.15s ease-in-out;
}
.menu li a:hover:after {width: 100%;}
.open-menu , .close-menu {
    position: absolute;
    color: var(--color2);
    cursor: pointer;
    font-size: 1.5rem;
    display: none;
    margin-right: 40px;
}
.open-menu {
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}
.close-menu {
    top: 20px;
    right: 20px;
}
#check {display: none;}