Trying to put a magnifying glass in my search bar (on the left) and put the "Join" and "Login" side by side (on right side)

@import url('https://fonts.googleapis.com/css?family=Poppins');
body {
  font-family: 'Poppins';
}

header>div {
  padding: 0 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid lightgray;
}

nav {
  width: 600px;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.blackHeart {
  width: 20px;
  margin-right: 1rem;
}

.searchmenu {
  padding-top: 12.5px;
  padding-bottom: 12.5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  width: 50px;
  margin-left: .3rem;
  display: right;
  padding-right: 10px;
}

.topnav,
.searchContainer {
  width: 100%;
}

.topnav input[type=text] {
  padding: 6px;
  font-size: 17px;
  border: none;
}

.topnav .search-container button {
  width: 90px;
  padding: 6px;
  background: red;
  font-size: 17px;
  border: none;
  cursor: pointer;
  color: white;
}

.topnav .search-container button:hover {
  background: black;
}

.search {
  background-color: rgba(211, 211, 211, 0.463);
  width: 78%;
}

.searchmenu ul {
  padding: 0;
  width: 100%;
  display: flex;
  align-items: center;
}

.account {
  list-style: none;
  text-decoration: none;
}

.account_join {
  list-style: none;
  text-decoration: none;
  color: black;

}

.account_login {
  list-style: none;
  text-decoration: none;
  color: black;
}

.searchDiv {
  width: 78%;
  display: flex;
  align-items: center;
  border: 1px solid black;
  background-color: rgba(211, 211, 211, 0.463);
}

.icon {
  width: 20px;
  height: 20px;
}

.amazing_section {
  display: flex;
  justify-content: center;
  height: 600px;
  background-color: rgba(232, 217, 217, .3);
  text-align: center;
}

.desc {
  padding-left: 400px;
  padding-right: 400px;
  font-size: 20px;
}

.see_button {
  height: 50px;
  width: 100px;
  background-color: #FB3B49;
  box-shadow: 8px 8px 0 rgba(251, 59, 73, .2);
  border: none;
  cursor: pointer;
  color: white;
}

.amazing_join {
  text-decoration: none;
  color: black;
  padding-left: 40px;
}

.joinlogin {display:flex;
  grid-gap: 10px;
  white-space:nowrap;
  }
  
input.search {
    background-image: url('https://cdn0.iconfinder.com/data/icons/very-basic-2-android-l-lollipop-icon-pack/24/search-512.png');
    background-size:contain;
    background-repeat: no-repeat;
    }

NPM Clone Nifty Penguin Magic npm Enterprise Products Solutions Resources Docs Support Search Join Log In Build amazing things Essential JavaScript development tools that help you go to market faster and build powerful applications using modern open source
code. See plans Join for free Bring the best of open source to your company npm is the tool used by over 11,000,000 JavaScript developers around the world. Your developers already use it. Your company depends on it. Create an Org and get more out of the
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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="./style.css">
  <title>Document</title>
</head>
<header>
  <div>
    <div>
      <img class="blackHeart" src="images/black-heart.png" alt="black heart" />
      <span> Nifty Penguin Magic </span>
    </div>
    <nav>
      <ul>
        <li><a href="#"> npm Enterprise </a></li>
        <li><a href="#"> Products </a></li>
        <li><a href="#"> Solutions </a></li>
        <li><a href="#"> Resources </a></li>
        <li><a href="#"> Docs </a></li>
        <li><a href="#"> Support </a></li>
      </ul>
    </nav>
  </div>

  <div class="searchmenu">
    <ul>
      <div>
        <img class="logo" src="images/npm-logo.png" alt="npm logo">
      </div>
      <div class="topnav">
        <div class="search-container">
          <form>
            <input type="text" placeholder="     Search.." name="search" class="search">
            <button type="submit">Search</button>
          </form>
        </div>
      </div>
      <div class="joinlogin">
        <a class="account_join" href="#">Join</a>
        <a class="account_login" href="#">Log In</a>
      </div>
    </ul>
  </div>
</header>
<section class="amazing_section">
  <ul>
    <header style="font-size: 80px;" class="title"> Build amazing things</header>
    <p class="desc">Build amazing things Essential JavaScript development tools that help you go to market faster and build powerful applications using modern open source code. </p>
    <button type="submit" class="see_button"> See Plans</button>
    <a class="amazing_join" href="#">Join For Free</a>
  </ul>
</section>


<body>

</body>

</html>