四列布局未调整为屏幕尺寸

Question

我正在尝试向我的网站添加页脚。我使用了 W3schools 四列布局：linked here。当我尝试添加调整大小时它不起作用。我试图将它从影响宽度更改为颜色，并且成功了，所以我知道识别屏幕尺寸或任何具有不正确 class/id 名称的东西都不是问题。

.footer {
  padding-top: 10px;
  padding-bottom: 10px;
  width: 100%;
  background-color: #1F363D;
  text-align: center;
  color: white;
}

.footer-column {
  float: left;
  width: 20%;
  height: 100%;
}

@media screen and (max-width: 600px) {
  .footer-column {
    width: 100%;
  }
}

.footer a:link {
  color: white;
  font-size: 12px;
}

.footer a:visited {
  color: white;
}

.footer a:hover {
  color: white;
}

.footer a:active {
  color: white;
}

<div class="footer">
  <div style="width:100%; display: flex; justify-content: space-evenly; align-text: center; font-size: 13px;">
    <div class="footer-column">
      <p style="font-size: 15px;">Pages</p>
      <a href="/index.html">Home</a><br>
      <a href="/projects.html">Projects</a><br>
      <a href="/contact.html">Contact</a><br>
      <a href="/about.html">About</a>
    </div>
    <div class="footer-column">
      <p>Projects</p>
      <a href="/projects/mastermind.html">Mastermind</a><br>
      <a href="/projects/simon.html">Simon</a><br>
      <a href="/projects/trivia.html">Trivia</a><br>
    </div>
    <div class="footer-column">
      <p>Column 3</p>
    </div>
    <div class="footer-column">
      <p>Column 4</p>
    </div>
  </div>
  <p style="color: white; text-align: center; font-family: monospace;">© 2022 Jake Poyer</p>
</div>

Answer 1

删除具有内联样式的第二个父项并将 flex 设置到主父项 .footer 上。然后使用媒体查询将 .footer-column 宽度设置为 100%，您还可以指示浏览器在同一断点处从默认 flex-row 更改为 flex-direction: column;，以便它使用全部可用 space.

.footer {
  padding-top: 10px;
  padding-bottom: 10px;
  width: 100%;
  background-color: #1F363D;
  text-align: center;
  color: white;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer-column {
  width: calc(100%/4);
  height: 100%;
}

@media screen and (max-width: 600px) {
  .footer-column {
    width: 100%;
  }
  .footer {
    flex-direction: column;
  }
}

.footer a:link {
  color: white;
  font-size: 12px;
}

.footer a:visited {
  color: white;
}

.footer a:hover {
  color: white;
}

.footer a:active {
  color: white;
}

<div class="footer">
  <div class="footer-column">
    <p style="font-size: 15px;">Pages</p>
    <a href="/index.html">Home</a><br>
    <a href="/projects.html">Projects</a><br>
    <a href="/contact.html">Contact</a><br>
    <a href="/about.html">About</a>
  </div>
  <div class="footer-column">
    <p>Projects</p>
    <a href="/projects/mastermind.html">Mastermind</a><br>
    <a href="/projects/simon.html">Simon</a><br>
    <a href="/projects/trivia.html">Trivia</a><br>
  </div>
  <div class="footer-column">
    <p>Column 3</p>
  </div>
  <div class="footer-column">
    <p>Column 4</p>
  </div>
  <p style="color: white; text-align: center; font-family: monospace; width: 100%;">© 2022 Jake Poyer</p>
</div>

Answer 2

将 flex-wrap: wrap 添加到 div 和 display: flex。也不需要 float: left for .footer-column:

.footer {
  padding-top: 10px;
  padding-bottom: 10px;
  width: 100%;
  background-color: #1F363D;
  text-align: center;
  color: white;
}

.footer-column {
  width: 20%;
  height: 100%;
}

@media screen and (max-width: 600px) {
  .footer-column {
    width: 100%;
  }
}

.footer a:link {
  color: white;
  font-size: 12px;
}

.footer a:visited {
  color: white;
}

.footer a:hover {
  color: white;
}

.footer a:active {
  color: white;
}

<div class="footer">
  <div style="width:100%; display: flex; flex-wrap: wrap; justify-content: space-evenly; align-text: center; font-size: 13px;">
    <div class="footer-column">
      <p style="font-size: 15px;">Pages</p>
      <a href="/index.html">Home</a><br>
      <a href="/projects.html">Projects</a><br>
      <a href="/contact.html">Contact</a><br>
      <a href="/about.html">About</a>
    </div>
    <div class="footer-column">
      <p>Projects</p>
      <a href="/projects/mastermind.html">Mastermind</a><br>
      <a href="/projects/simon.html">Simon</a><br>
      <a href="/projects/trivia.html">Trivia</a><br>
    </div>
    <div class="footer-column">
      <p>Column 3</p>
    </div>
    <div class="footer-column">
      <p>Column 4</p>
    </div>
  </div>
  <p style="color: white; text-align: center; font-family: monospace;">© 2022 Jake Poyer</p>
</div>

四列布局未调整为屏幕尺寸

Four Column Layout Not Resizing to Screen Size

html

css

flexbox