如何删除内嵌块元素上方和下方的空间？

Question

我似乎无法弄清楚如何删除空间 和 我的inline block元素，如图所示。

P.S line-height不会删除空格。

这是所有元素的CSS。

nav ul li {
font-size:16px;
display:inline-block;
padding:20px;
border: 3px solid black;
}

图像：

JsFiddle

Answer 1

ul默认为margin和padding，因此请将其重置

body {
  padding: 0;
  margin: 0;
  font-family: sans-serif;
}
header {
  background: #00795f;
  width: 100%;
  padding: 40px 0;
  /* 40px top and bottom, 0px left and right */
  color: white;
  text-align: center;
}
nav {
  background-color: #43a286;
  color: white;
  overflow: hidden;
  padding: 0px;
  text-align: center;
  margin: 0;
}
ul {
 /* padding: 0; you may need only the margin */
  margin: 0
}
a {
  text-decoration: none;
  color: inherit;
}
nav ul li {
  font-size: 16px;
  display: inline-block;
  padding: 20px;
  border: 3px solid black;
}
ul li:hover {
  background-color: #399077;
}
section {
  line-height: 1.5em;
  font-size: 1.5em;
  padding: 40px;
  width: 75%;
  margin: 0 auto;
}

  <header>
    <h1>Loving it more everyday</h1>
  </header>
  <nav>
    <ul>
      <li> <a href="#" target="_blank"> Home </a>
      </li>
      <li> <a href="#" target="_blank"> About </a>
      </li>
      <li> <a href="#" target="_blank"> Blog </a>
      </li>
      <li> <a href="#" target="_blank"> Shop </a>
      </li>
      <li> <a href="#" target="_blank"> Gallery </a>
      </li>
      <li> <a href="#" target="_blank"> Contact </a>
      </li>
    </ul>
  </nav>
  <section>
    When you try your best, but you don't succeed. When you get what you want, but not what you need. When you feel so tired, but you can't sleep. Stuck in reverse. And the tears come streaming down your face. When you lose something you can't replace.When
    you love someone, but it goes to waste. Could it be worse? Lights will guide you home. And ignite your bones. And I will try to fix you. And high up above or down below. When you're too in love to let it go. But if you never try you'll never know.
    Just what you're worth. When you try your best, but you don't succeed. When you get what you want, but not what you need. When you feel so tired, but you can't sleep. Stuck in reverse. And the tears come streaming down your face. When you lose something
    you can't replace.When you love someone, but it goes to waste. Could it be worse? Lights will guide you home. And ignite your bones. And I will try to fix you. And high up above or down below. When you're too in love to let it go. But if you never
    try you'll never know. Just what you're worth
  </section>