我正在尝试使主页和台式机和移动设备上的英雄图像响应。现在,它卡在页面的第二部分(在它下面),我尝试了不同的方法来重新放置它,我无法将其放在母版上居中...任何提示将不胜感激,我不知道知道该怎么办或我在做什么错:-/
以下是HTML:
<!-- Masthead -->
<header class="masthead bg-primary image-center">
<div class="container d-flex align-items-center flex-column">
<!--Background Particles-->
<div id="particles-js"></div>
<!--Hero Image-->
<img class="masthead-logo mb-5" src="https://pandassi.github.io/website.github.io/hero.png" alt="Lila Ait">
</div>
</header>
对于CSS:
.bg-primary {
background: radial-gradient(#49a7b7, #293f50) !important;
height: 35em;
}
然后:
/*Just for info, I am using a Boostrap framework, not sure the purpose of mb-5 but I didn't want to mess with it*/
.mb-5,
.my-5 {
margin-top: 3rem !important;
margin-bottom: 3rem
再远一点:
#particles-js {
width: 80rem;
height: 35em;
margin-top: -12.5rem !important;
}
.masthead {
padding-top: calc(6rem + 74px);
padding-bottom: 6rem;
}
.masthead .masthead-heading {
font-size: 2.75rem;
line-height: 2.75rem;
}
.masthead .masthead-subheading {
font-size: 1.25rem;
}
.masthead .masthead-logo {
width: 25rem;
}
.masthead-logo {
max-width: 100%;
max-height: 100%;
display: flex;
justify-content: center;
align-items: center;
z-index: 1;
}
@media (min-width: 992px) {
.masthead {
padding-top: calc(6rem + 104px);
padding-bottom: 6rem;
}
.masthead .masthead-heading {
font-size: 4rem;
line-height: 3.5rem;
}
.masthead .masthead-subheading {
font-size: 1.5rem;
}
.masterhead-logo {
display: flex;
justify-content: center;
align-items: center;
}
}
答案 0 :(得分:0)
在Bootstrap中,为了使图像响应,有一个类。其class=img-fluid
并将图像放置在页面中心,您可以将其应用于图像
img{
position: absolute;
top:50%;
left:50%;
transform: translate(-50%,-50%)
}