<header class="header">
      <div class="logo">
        <h1>logo</h1>
      </div>

      <div class="navigation">
        <div class="dropdown" data-type="dropmenu">
          <div class="dropdown_title">Home1</div>

          <ul class="dropdown_menu">
            <li class="dropdown_item"><a href="#About">About1</a></li>
            <li class="dropdown_item"><a href="#Contacts">Contacts1</a></li>
            <li class="dropdown_item"><a href="#Products">Products1</a></li>
          </ul>
        </div>
        <div class="dropdown">
          <div class="dropdown_title">Home2</div>

          <ul class="dropdown_menu">
            <li class="dropdown_item"><a href="#About">About2</a></li>
            <li class="dropdown_item"><a href="#Contacts">Contacts2</a></li>
            <li class="dropdown_item"><a href="#Products">Products2</a></li>
          </ul>
        </div>
        <div class="dropdown">
          <div class="dropdown_title">Home3</div>

          <ul class="dropdown_menu">
            <li class="dropdown_item"><a href="#About">About3</a></li>
            <li class="dropdown_item"><a href="#Contacts">Contacts3</a></li>
            <li class="dropdown_item"><a href="#Products">Products3</a></li>
          </ul>
        </div>
      </div>
    </header>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: brown;
  font-family: "Roboto", sans-serif;
}

a {
  text-decoration: none;
  color: black;
}

.header {
  width: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: coral;
}

.navigation {
  display: flex;
}

.dropdown {
  background-color: cornflowerblue;
  text-align: center;
  position: relative;
  margin-right: 30px;
}

.dropdown:last-child {
  margin-right: 0;
}

.dropdown_title {
  cursor: pointer;
  padding: 5px 10px;
  user-select: none;
}

.dropdown_menu {
  list-style: none;
  display: none;
  position: absolute;
  top: 100%;
  background-color: rgb(219, 216, 216);
  border-radius: 5px;
}

.dropdown_menu.active {
  display: block;
}

.dropdown_item {
  text-decoration: none;
  color: black;
  padding: 5px 10px;
  border-top: 1px solid gray;
}

.dropdown_item:first-child {
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
}
.dropdown_item:last-child {
  border-bottom-left-radius: 5px;
  border-bottom-right-radius: 5px;
}

.dropdown_item:hover {
  background-color: rgb(173, 173, 173);
}

const $dropDowns = document.querySelectorAll(".dropdown");
const $dropMenus = document.querySelectorAll(".dropdown_menu");

$dropDowns.forEach((el) => {
  el.addEventListener("click", () => {
    el.querySelector(".dropdown_menu").classList.toggle("active");
  });
});

window.onclick = function (e) {
  if (!e.target.classList.contains("dropdown_title")) {
    $dropMenus.forEach((element) => element.classList.remove("active"));
  }
};