为啥我的 HTML/CSS 网站顶部有空白? [复制]
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【中文标题】为啥我的 HTML/CSS 网站顶部有空白? [复制]【英文标题】:Why is there white space at the top of my HTML/CSS website? [duplicate]为什么我的 HTML/CSS 网站顶部有空白? [复制] 【发布时间】:2019-06-01 05:17:21 【问题描述】:我的 html/CSS 项目顶部有一个我无法摆脱的奇怪空白。我如何摆脱空白?即使不使用normalize.css
文件也可以看到它,尽管我在normalize.css
中将边距和填充设置为0,所以这不是问题。我制作了一个 JSsn-p here,可能更容易理解。
*
margin: 0;
padding: 0;
border: 0;
outline: 0;
font-size: 100%;
vertical-align: baseline;
background: transparent;
box-sizing: border-box;
这是我的项目的 HTML/CSS 代码:
HTML:
<!DOCTYPE html>
<html>
<head>
<title>SuperMegaAwesome Landing Page | Matt Bell</title>
<link rel="stylesheet" type="text/css" href="./Stylesheets/CSS/main.css">
<link rel="stylesheet" type="text/css" href="./Stylesheets/CSS/normalize.css">
</head>
<body>
<header>
<p id="logo">Super<span>Mega</span>Awesome</p>
<nav>
<a href="#">Home</a>
<a href="#">Portfolio</a>
<a href="#">Services</a>
<a href="#">Get in touch</a>
</nav>
</header>
<section id="hero">
<div id="hero_overlay">
<div class="wrapper">
<div id="content">
<h1 class="title">We create beautiful products</h1>
<h2 class="sub_title">Truffaut DIY keffiyeh, twee messenger bag venmo locavore organic master cleanse marfa gochujang selvage</h2>
<div class="button_wrapper">
<a href="#" class="button button_highlight">Learn More</a>
<a href="#" class="button button_secondary">Play Video</a>
</div>
</div>
</div>
</div>
</section>
<div>hELLO</div>
<div>HELLOOO</div>
<footer>Hello</footer>
</body>
</html>
CSS:
body
font-family: "Brandon Grotesque", Helvetica, sans-serif;
.wrapper
width: 90vw;
height: 100%;
margin: 0 auto;
background-color: rgba(100, 100, 0, 0.4);
header
position: fixed;
height: 10vh;
width: 100vw;
header #logo
color: #FFFFFF;
font-weight: 700;
font-size: 1.35rem;
position: absolute;
left: 10vw;
top: 50%;
transform: translateY(-50%);
header #logo span
font-weight: 300;
header nav
position: absolute;
right: 10vw;
top: 50%;
transform: translateY(-50%);
header nav a
color: #FFFFFF;
font-weight: 700;
text-decoration: none;
margin-left: 3vw;
#hero
background-image: url(../../images/banner_background.jpg);
background-repeat: no-repeat;
background-size: cover;
background-position: top;
height: 95vh;
#hero #hero_overlay
background-color: rgba(0, 0, 0, 0.4);
width: 100%;
height: 100%;
#hero .title, #hero .sub_title
color: #FFFFFF;
text-align: center;
#hero .title
font-size: 3.5rem;
/*# sourceMappingURL=main.css.map */
我还使用 normalize.css
进行了一些调整,以使跨浏览器的格式化成为同义词:
*
margin: 0;
padding: 0;
border: 0;
outline: 0;
font-size: 100%;
vertical-align: baseline;
background: transparent;
box-sizing: border-box;
/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */
/* Document
========================================================================== */
/**
* 1. Correct the line height in all browsers.
* 2. Prevent adjustments of font size after orientation changes in ios.
*/
html
line-height: 1.15; /* 1 */
-webkit-text-size-adjust: 100%; /* 2 */
padding: 0;
margin: 0;
/* Sections
========================================================================== */
/**
* Remove the margin in all browsers.
*/
body
margin: 0;
padding: 0;
/**
* Render the `main` element consistently in IE.
*/
main
display: block;
/**
* Correct the font size and margin on `h1` elements within `section` and
* `article` contexts in Chrome, Firefox, and Safari.
*/
h1
font-size: 2em;
margin: 0.67em 0;
/* Grouping content
========================================================================== */
/**
* 1. Add the correct box sizing in Firefox.
* 2. Show the overflow in Edge and IE.
*/
hr
height: 0; /* 1 */
overflow: visible; /* 2 */
/**
* 1. Correct the inheritance and scaling of font size in all browsers.
* 2. Correct the odd `em` font sizing in all browsers.
*/
pre
font-family: monospace, monospace; /* 1 */
font-size: 1em; /* 2 */
/* Text-level semantics
========================================================================== */
/**
* Remove the gray background on active links in IE 10.
*/
a
background-color: transparent;
/**
* 1. Remove the bottom border in Chrome 57-
* 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
*/
abbr[title]
border-bottom: none; /* 1 */
text-decoration: underline; /* 2 */
text-decoration: underline dotted; /* 2 */
/**
* Add the correct font weight in Chrome, Edge, and Safari.
*/
b,
strong
font-weight: bolder;
/**
* 1. Correct the inheritance and scaling of font size in all browsers.
* 2. Correct the odd `em` font sizing in all browsers.
*/
code,
kbd,
samp
font-family: monospace, monospace; /* 1 */
font-size: 1em; /* 2 */
/**
* Add the correct font size in all browsers.
*/
small
font-size: 80%;
/**
* Prevent `sub` and `sup` elements from affecting the line height in
* all browsers.
*/
sub,
sup
font-size: 75%;
line-height: 0;
position: relative;
vertical-align: baseline;
sub
bottom: -0.25em;
sup
top: -0.5em;
/* Embedded content
========================================================================== */
/**
* Remove the border on images inside links in IE 10.
*/
img
border-style: none;
/* Forms
========================================================================== */
/**
* 1. Change the font styles in all browsers.
* 2. Remove the margin in Firefox and Safari.
*/
button,
input,
optgroup,
select,
textarea
font-family: inherit; /* 1 */
font-size: 100%; /* 1 */
line-height: 1.15; /* 1 */
margin: 0; /* 2 */
/**
* Show the overflow in IE.
* 1. Show the overflow in Edge.
*/
button,
input /* 1 */
overflow: visible;
/**
* Remove the inheritance of text transform in Edge, Firefox, and IE.
* 1. Remove the inheritance of text transform in Firefox.
*/
button,
select /* 1 */
text-transform: none;
/**
* Correct the inability to style clickable types in iOS and Safari.
*/
button,
[type="button"],
[type="reset"],
[type="submit"]
-webkit-appearance: button;
/**
* Remove the inner border and padding in Firefox.
*/
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner
border-style: none;
padding: 0;
/**
* Restore the focus styles unset by the previous rule.
*/
button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring
outline: 1px dotted ButtonText;
/**
* Correct the padding in Firefox.
*/
fieldset
padding: 0.35em 0.75em 0.625em;
/**
* 1. Correct the text wrapping in Edge and IE.
* 2. Correct the color inheritance from `fieldset` elements in IE.
* 3. Remove the padding so developers are not caught out when they zero out
* `fieldset` elements in all browsers.
*/
legend
box-sizing: border-box; /* 1 */
color: inherit; /* 2 */
display: table; /* 1 */
max-width: 100%; /* 1 */
padding: 0; /* 3 */
white-space: normal; /* 1 */
/**
* Add the correct vertical alignment in Chrome, Firefox, and Opera.
*/
progress
vertical-align: baseline;
/**
* Remove the default vertical scrollbar in IE 10+.
*/
textarea
overflow: auto;
/**
* 1. Add the correct box sizing in IE 10.
* 2. Remove the padding in IE 10.
*/
[type="checkbox"],
[type="radio"]
box-sizing: border-box; /* 1 */
padding: 0; /* 2 */
/**
* Correct the cursor style of increment and decrement buttons in Chrome.
*/
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button
height: auto;
/**
* 1. Correct the odd appearance in Chrome and Safari.
* 2. Correct the outline style in Safari.
*/
[type="search"]
-webkit-appearance: textfield; /* 1 */
outline-offset: -2px; /* 2 */
/**
* Remove the inner padding in Chrome and Safari on macOS.
*/
[type="search"]::-webkit-search-decoration
-webkit-appearance: none;
/**
* 1. Correct the inability to style clickable types in iOS and Safari.
* 2. Change font properties to `inherit` in Safari.
*/
::-webkit-file-upload-button
-webkit-appearance: button; /* 1 */
font: inherit; /* 2 */
/* Interactive
========================================================================== */
/*
* Add the correct display in Edge, IE 10+, and Firefox.
*/
details
display: block;
/*
* Add the correct display in all browsers.
*/
summary
display: list-item;
/* Misc
========================================================================== */
/**
* Add the correct display in IE 10+.
*/
template
display: none;
/**
* Add the correct display in IE 10.
*/
[hidden]
display: none;
【问题讨论】:
制作嵌入代码 sn-p 或者可能是 jsfiddle 或链接到实时站点,因为有时很难仅从您的代码中分辨出来 感谢@zack6849 的提示。我做了一个 jsfiddle here 【参考方案1】:尝试添加这个:
body
margin: 0;
#hero .title
margin-top: 0;
所以body
和.title
的样式如下:
body
font-family: "Brandon Grotesque", Helvetica, sans-serif;
margin: 0;
#hero .title
margin-top: 0;
font-size: 3.5rem;
【讨论】:
成功了,谢谢!但我不完全理解它为什么会起作用,我以为我已经用* margin: 0;
将所有边距设置为 0@
我只是指出了空格。现在您可以根据需要进行设置。 :)
@Patho63 够公平【参考方案2】:
这是由margin collapsing 现象引起的。见related question。如果您删除 main.css 的内容,您会看到布局变得“正常”(例如顶部没有空白),因此 normalize.css 不是导致问题。
如何解决?
只需将其添加到您的 normalize.css * 部分。见fiddle。
*
overflow:hidden; /* or auto */
【讨论】:
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