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我正在一个 CSS 看起来非常混乱的网站上工作。

我注意到的第一件事是媒体查询按以下混乱的顺序排列……这肯定是错的吗？重组成正确的顺序是否明智？如果没有大量的工作，这可能吗？我想避免尽可能多的重复，那么这将是正确的顺序，我可以消除其中一些断点吗？

@media screen and (max-width:997px)
@media screen and (min-width:674px) and (max-width:997px)
@media screen and (max-width:997px)
@media screen and (min-width:998px)
@media screen and (max-width:768px)
@media only screen and (min-width: 998px)
@media only screen and (max-width: 997px) and (min-width: 674px)
@media only screen and (max-width: 673px) 
@media print
@media only screen and (max-width: 997px)
@media only screen and (max-width: 768px)
@media only screen and (min-width: 769px) and (max-width: 997px)
@media only screen and (min-width: 674px) and (max-width: 997px)
@media only screen and (max-width: 673px) 
@media only screen and (min-width: 998px)
@media only screen and (min-width: 674px) and (max-width: 997px)
@media only screen and (max-width: 673px) 
@media only screen and (max-width: 551px)
@media only screen and (max-width: 440px)
@media only screen and (max-width: 380px) 
@media screen and (max-width:997px)
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2 回答 2

0

在您的代码中，相同@media的查询被多次使用，您可以合并它们的代码

其次，一个很好的做法是@media为 ex 编写从大到低的查询。

@media only screen and (min-width: 998px)在顶部使用，因为它在您的代码中更高，然后更小 n 更小。

如果您有时间，请在此处阅读有关@media查询的简要说明：http: //www.htmlgoodies.com/html5/tutorials/an-introduction-to-css3-media-queries.html#fbid=XIoHGkg8UyR

于 2016-03-30T19:47:12.800 回答
0

此示例可能会有所帮助，仅使用 @media 屏幕和 (min-width:998px) 从高到低。 

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
* {
    box-sizing: border-box;
}
.row::after {
    content: "";
    clear: both;
    display: table;
}
[class*="col-"] {
    float: left;
    padding: 15px;
}
html {
    font-family: "Lucida Sans", sans-serif;
}
.header {
    background-color: #9933cc;
    color: #ffffff;
    padding: 15px;
}
.menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
.menu li {
    padding: 8px;
    margin-bottom: 7px;
    background-color: #33b5e5;
    color: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
.menu li:hover {
    background-color: #0099cc;
}
.aside {
    background-color: #33b5e5;
    padding: 15px;
    color: #ffffff;
    text-align: center;
    font-size: 14px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
.footer {
    background-color: #0099cc;
    color: #ffffff;
    text-align: center;
    font-size: 12px;
    padding: 15px;
}
/* For mobile phones: */
[class*="col-"] {
    width: 100%;
}
@media only screen and (min-width: 600px) {
    /* For tablets: */
    .col-m-1 {width: 8.33%;}
    .col-m-2 {width: 16.66%;}
    .col-m-3 {width: 25%;}
    .col-m-4 {width: 33.33%;}
    .col-m-5 {width: 41.66%;}
    .col-m-6 {width: 50%;}
    .col-m-7 {width: 58.33%;}
    .col-m-8 {width: 66.66%;}
    .col-m-9 {width: 75%;}
    .col-m-10 {width: 83.33%;}
    .col-m-11 {width: 91.66%;}
    .col-m-12 {width: 100%;}
}
@media only screen and (min-width: 768px) {
    /* For desktop: */
    .col-1 {width: 8.33%;}
    .col-2 {width: 16.66%;}
    .col-3 {width: 25%;}
    .col-4 {width: 33.33%;}
    .col-5 {width: 41.66%;}
    .col-6 {width: 50%;}
    .col-7 {width: 58.33%;}
    .col-8 {width: 66.66%;}
    .col-9 {width: 75%;}
    .col-10 {width: 83.33%;}
    .col-11 {width: 91.66%;}
    .col-12 {width: 100%;}
}
</style>
</head>
<body>

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

<div class="row">

<div class="col-3 col-m-3 menu">
  <ul>
    <li>The Flight</li>
    <li>The City</li>
    <li>The Island</li>
    <li>The Food</li>
  </ul>
</div>

<div class="col-6 col-m-9">
  <h1>The City</h1>
  <p>Chania is the capital of the Chania region on the island of Crete. The city can be divided in two parts, the old town and the modern city.</p>
</div>

<div class="col-3 col-m-12">
  <div class="aside">
    <h2>What?</h2>
    <p>Chania is a city on the island of Crete.</p>
    <h2>Where?</h2>
    <p>Crete is a Greek island in the Mediterranean Sea.</p>
    <h2>How?</h2>
    <p>You can reach Chania airport from all over Europe.</p>
  </div>
</div>

</div>

<div class="footer">
  <p>Resize the browser window to see how the content respond to the resizing.</p>
</div>

</body>
</html>

于 2017-07-01T06:42:39.433 回答