.logo{
    max-width: 100px;
}

.header{
    background: #00000079;
    border-bottom: 2px solid #000000b9;

}
.header .nav_link{
    font-family: 'Exo', sans-serif;
    font-size: 1em;
}
.header .navbar-toggler{
    color: #fff;
    font-size: 2em;
}