How can I hide the block when the window width is increased?

Question

css

There is this code:

<div class="overlay">
    <a href="#" class="overlay__toggler">&#9776;</a>
    <div class="overlay__menu">
      <a href="#" class="overlay__nav-link">Главная</a>
      <a href="#" class="overlay__nav-link">Услуги</a>
      <a href="#" class="overlay__nav-link">Навыки</a>
      <a href="#" class="overlay__nav-link">Команда</a>
      <a href="#" class="overlay__nav-link">Контакты</a>
    </div>
  </div>
  <header>
    <div class="header__top">
      <span class="header__logo">Tesmi</span>
      <nav class="header__nav">
        <a href="#" class="header__nav-toggle">&#9776;</a>
        <a href="#" class="header__nav-link">Главная</a>
        <a href="#" class="header__nav-link">Услуги</a>
        <a href="#" class="header__nav-link">Навыки</a>
        <a href="#" class="header__nav-link">Команда</a>
        <a href="#" class="header__nav-link">Контакты</a>
      </nav>
    </div>
  </header>

header {
  width: 100%;
  background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.600) 0%, rgba(0, 0, 0, 0.600) 50%, rgba(0, 0, 0, 0.600) 100%), url(../img/background.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  min-height: 100vh;
  padding: 15px;
  box-sizing: border-box;
}

.header__top {
  display: flex;
  justify-content: space-between;
}

.header__logo {
  color: var(--main);
  font-family: 'Comic Neue', sans-serif;
  font-weight: 700;
  font-size: 45px;
}
nav {
  margin-top: 17px;
}

nav a {
  font-size: 19px;
}

nav a:not(:first-child) {
  margin-left: 4px;
}

.header__nav-toggle {
  display: none;
  font-size: 22px;
}

.overlay {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  background: rgba(0, 0, 0, 0.342);
  width: 100%;
  height: 100%;
  padding: 54px 15px;
  box-sizing: border-box;
}

.overlay.active {
  display: block;
}

.overlay__toggler {
  font-size: 22px;
  float: right;
}

.overlay__menu {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.overlay__nav-link {
  font-size: 27px;
}

.overlay__nav-link {
  padding: 7px;
}

@media screen and (max-width: 600px) {

  .header__nav-link {
    display: none;
  }

  .header__nav-toggle {
    display: block;
    float: right;
  }

  .header__nav-link.active {
    display: block;
    margin-top: 13px;
  }
}

var nav = $('.overlay');
var headerOpen = $('.header__nav-toggle');

headerOpen.on('click', function () {
  nav.addClass('active');
})

var overlayClose = $('.overlay__toggler');

overlayClose.on('click', function () {
  nav.removeClass('active');
})

if ($(window).width() > 600) {
  nav.css('display', 'none');
}

When increasing the size of the window, if the overlay is open, it should be hidden, but for some reason it is not hidden.

How to fix it?