Question

这可能很简单，我无法弄明白。但我试图以gif作为背景来创造一种花卉生长的幻觉，其上有一个活动标志图像和一个捐赠按钮。

全屏时背景会在底部被切断。不知何故，图像被压低了。当您为移动响应性设置较小的屏幕时，整个图像开始出现（高度）。我不确定我做错了什么。

任何帮助将不胜感激！谢谢。以下是我目前使用的代码。

.header-wrapper{
        width: 100%;
	background-image: url(https://secure3.convio.net/little/images/content/pagebuilder/HorticultureBanner-Animated1.gif);
        background-size: cover;
	position: relative;
	margin: 0 auto 0 auto;
	font-family: "museo-sans", Helvetica, Arial, sans-serif;
	
}
.centered { margin-left: auto; margin-right: auto; }
.align-center { text-align: center; }
.campaign-logo {
    max-width: 70%;
position: relative;
height: auto;
}
.padding-3x { padding: 45px; }
.button1{
    color: #fff;
    display: inline-block;
    font-size: 18px;
    letter-spacing: .75px;
    padding: 15px 21px;
    text-transform: uppercase;
    text-decoration: none;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
    vertical-align: middle;
}
.green-bg { background-color: #8ec63f;}

<div class="header-wrapper contained-12 centered align-center middle">
<img class="campaign-logo" src="https://secure3.convio.net/little/images/content/pagebuilder/horticulture_logo.png"/>
<p class="padding-3x"><a class="button1 green-bg" title="Give Now" href="Donation2?idb=[[S76:idb]]&amp;df_id=1540&amp;1540.donation=root">Give Now</a></p>
</div>

Answer 1

只需在标头包装类

上添加background-position: bottom;即可

Answer 2

  .header-wrapper  {

        width: 100%;
        font-family: "museo-sans", Helvetica, Arial, sans-serif;
        background:  url(https://secure3.convio.net/little/images/content/pagebuilder/HorticultureBanner-Animated1.gif) no-repeat center center fixed; 
        background-size: cover;

      }

Answer 3

您可以使用：background-position: center bottom;

.header-wrapper {
  width: 100%;
  background-image: url(https://secure3.convio.net/little/images/content/pagebuilder/HorticultureBanner-Animated1.gif);
  background-size: cover;
  background-position: center bottom;
  position: relative;
  margin: 0 auto 0 auto;
  font-family: "museo-sans", Helvetica, Arial, sans-serif;
}

.centered {
  margin-left: auto;
  margin-right: auto;
}

.align-center {
  text-align: center;
}

.campaign-logo {
  max-width: 70%;
  position: relative;
  height: auto;
}

.padding-3x {
  padding: 45px;
}

.button1 {
  color: #fff;
  display: inline-block;
  font-size: 18px;
  letter-spacing: .75px;
  padding: 15px 21px;
  text-transform: uppercase;
  text-decoration: none;
  -webkit-transition: all 0.2s;
  transition: all 0.2s;
  vertical-align: middle;
}

.green-bg {
  background-color: #8ec63f;
}

<div class="header-wrapper contained-12 centered align-center middle">
  <img class="campaign-logo" src="https://secure3.convio.net/little/images/content/pagebuilder/horticulture_logo.png" />
  <p class="padding-3x"><a class="button1 green-bg" title="Give Now" href="Donation2?idb=[[S76:idb]]&amp;df_id=1540&amp;1540.donation=root">Give Now</a></p>
</div>

有一个部分的背景图像的问题

3 个答案: