header{
    display: flex;
    justify-content: space-between;
    background-color: #fff;
}

nav{
    display: flex;
    margin: auto 20px auto 0;
    gap: 20px;
}

nav a{
    transition: 0.2s;
    color: #333;
    text-decoration: none;
    font-weight: 600;
}
nav a:hover{
    transition: 0.5s;
    color: #aaa;
}

#header_logo{
    transition: 0.5s;
    margin: 13px 0 13px 50px;
    width: 320px;
}

#header_logo:hover{
    transition: 0.5s;
    opacity: 0.6;
}