html - 如何将图像居中放置在页眉左侧？

Question

我正在为一个学校元素制作一个 HTML 网站，我想将一张图片放在页眉左侧的中央。通过标题，我的意思是说世界矢量控制的大事。我将图像向左浮动，但由于某种原因它只是停留在左上角。

body {
  background-color: #252525;
  margin: 0;
  font-family: ultra;
}

.navbar {
  overflow: hidden;
  background-color: #333;
  font-family: ultra;
}

.navbar a {
  float: left;
  font-size: 16px;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 16px;
  border: none;
  outline: none;
  color: white;
  padding: 14px 16px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.navbar a:hover,
.dropdown:hover .dropbtn {
  background-color: #2E86C1;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  z-index: 1;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #2E86C1;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.navbar .search-container {
  float: right;
}

.navbar input[type=text] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: none;
}

.navbar .search-container button {
  float: right;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background: ;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.navbar .search-container button:hover {
  background: #ccc;
}

@media screen and (max-width: 600px) {
  .navbar .search-container {
    float: none;
  }
  .navbar a,
  .navbar input[type=text],
  .navbar .search-container button {
    float: none;
    display: block;
    text-align: left;
    width: 100%;
    margin: 0;
    padding: 14px;
  }
  .navbar input[type=text] {
    border: 1px solid #ccc;
  }
}

.header {
  background-color: #252525;
  padding: 10px;
  text-align: center;
  color: blue;
  margin 0;
}

h1 {
  color: #2E86C1;
  font-size: 60px;
  font-family: ultra;
}

img {
  float: left;
}

#rcorners1 {
  margin: 50px auto;
  padding-top: 100px;
  border-radius: 25px;
  background: #fffafa;
  padding: 20px;
  width: 90%;
  height: ;
}

<div class="header">
  <img src="Untitled-2.png" alt="M" width="80" height="80">
  <h1>World Vector Control</h1>
</div>

<div class="navbar">
  <a href="#home">Home</a>
  <a href="#news">About</a>

  <div class="dropdown">
    <button class="dropbtn">
                    Introduction
                  <i class="fa fa-caret-down"></i>
                </button>

    <div class="dropdown-content">
      <a href="#">The Problem</a>
      <a href="#">The Solution</a>
    </div>
  </div>

  <a href="#FAQ">FAQ</a>

  <div class="dropdown">
    <button class="dropbtn">
                    Contact Us
                  <i class="fa fa-caret-down"></i>
                </button>

    <div class="dropdown-content">
      <a href="#">Donate</a>
      <a href="#">Get Invovled</a>
    </div>
  </div>

  <div class="search-container">

    <form action="/action_page.php">

      <input type="text" placeholder="Search..." name="search">

      <button type="submit">
                        <i class="fa fa-search"></i>
                    </button>

    </form>

  </div>
</div>

<p id="rcorners1">Rounded corners!</p>

Answer 1

试试这个:

<img src="Untitled-2.png" alt="M" width="80" height="80" style="left:30px;">