我有一张卡，图像是从BE提取的。该图像是卡的背景图像。文字在该图片上方。我需要在图像上方和文本下方添加渐变。同样，当用户将鼠标悬停在卡片上时，渐变颜色也应更改。如何使图像充满整个卡片并在图像上显示线性渐变？
.card {
position: relative;
margin-left: 25px;
min-width: 245px;
height: 293px;
border-radius: 20px;
box-shadow: 0px 4px 12px 1px var(--box-shadow-color);
margin-right: 1rem;
display: flex;
flex-direction: column;
align-items: center;
align-items: center;
justify-content: center;
z-index: 2;
transition-timing-function: cubic-bezier(0.64, 0.57, 0.67, 1.53);
transform: scale(1);
transition-duration: 300ms;
}<ul class="carousel" data-target="carousel">
<li class="card" data-target="card">
<img class="background" src="../scr/images/image.png">
<h2> Title
<h2>
</li>
</ul>
答案 0 :(得分：1)
// enter code here.card {
position: relative;
margin-left: 25px;
min-width: 245px;
height: 293px;
border-radius: 20px;
box-shadow: 0px 4px 12px 1px var(--box-shadow-color);
margin-right: 1rem;
display: flex;
flex-direction: column;
align-items: center;
align-items: center;
justify-content: center;
z-index: 2;
transition-timing-function: cubic-bezier(0.64, 0.57, 0.67, 1.53);
transform: scale(1);
transition-duration: 300ms;
display:inline-block;
}
.pickgradient {
display:inline-block;
background: -moz-linear-gradient(top, rgba(0,0,0,0) 0%, rgba(0,0,0,0.65) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.65)), color-stop(100%,rgba(0,0,0,0))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,0.65) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,0.65) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,0.65) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(0,0,0,0) 0%,rgba(0,0,0,0.65) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#a6000000', endColorstr='#00000000',GradientType=0 ); /* IE6-9 */
}
img{
position:relative;
z-index:-1;
display:block;
height:200px; width:auto;
}<ul class="carousel" data-target="carousel">
<li class="card" data-target="card">
<div class="pickgradient">
<img src="https://i.imgur.com/5I0iHYf.jpg" />
</div>
<h2> Title dfdf
</h2>
</li>
</ul>
答案 1 :(得分：1)
尝试一下。
body {
font-family: 'Segoe UI', 'San Francisco', Calibri, Helvetica, Arial, sans-serif;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
}
.c-graidient {
background: #000;
background: -moz-linear-gradient(-45deg, #000000 0%, #000000 25%, #1e539e 50%, #ff3083 75%, #7800a8 100%);
/* FF3.6-15 */
background: -webkit-linear-gradient(-45deg, #000000 0%, #000000 25%, #1e539e 50%, #ff3083 75%, #7800a8 100%);
/* Chrome10-25,Safari5.1-6 */
background: linear-gradient(135deg, #000000 0%, #000000 25%, #1e539e 50%, #ff3083 75%, #7800a8 100%);
/* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
background-size: 400% 400%;
background-repeat: no-repeat;
display: flex;
width: 500px;
height: 500px;
max-width: 100vw;
max-height: auto;
justify-content: center;
align-items: center;
color: #fff;
position: relative;
cursor: pointer;
transition: .5s all;
}
.c-graidient__img {
position: absolute;
left: 0;
top: 0;
background-position: center center;
background-repeat: no-repeat;
background: #000;
background-size: cover;
width: 100%;
height: auto;
z-index: 1;
opacity: .5;
mix-blend-mode: screen;
}
.c-graidient__title {
position: relative;
z-index: 10;
text-transform: uppercase;
letter-spacing: .05em;
}
.c-graidient:hover {
background-position: 100% 100%;
}
.c-graidient:hover__title {
text-shadow: 0 0 20px black;
}<a class="c-graidient">
<img class="c-graidient__img" src="https://images.unsplash.com/photo-1466657718950-8f9346c04f8f?dpr=1&auto=format&fit=crop&w=800&h=800&q=80&cs=tinysrgb" />
<h2 class="c-graidient__title">Gradient Hover Effect</h2>
</a>
答案 2 :(得分：0)
这是一个解决方案，请尝试一下。
body {
font-family: 'Segoe UI', 'San Francisco', Calibri, Helvetica, Arial, sans-serif;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
}
.c-graidient {
background: #000;
background: -moz-linear-gradient(-45deg, #000000 0%, #000000 25%, #1e539e 50%, #ff3083 75%, #7800a8 100%);
/* FF3.6-15 */
background: -webkit-linear-gradient(-45deg, #000000 0%, #000000 25%, #1e539e 50%, #ff3083 75%, #7800a8 100%);
/* Chrome10-25,Safari5.1-6 */
background: linear-gradient(135deg, #000000 0%, #000000 25%, #1e539e 50%, #ff3083 75%, #7800a8 100%);
/* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
background-size: 400% 400%;
background-repeat: no-repeat;
display: flex;
width: 500px;
height: 500px;
max-width: 100vw;
max-height: 100vh;
justify-content: center;
align-items: center;
color: #fff;
position: relative;
cursor: pointer;
transition: .5s all;
}
.c-graidient__img {
position: absolute;
left: 0;
top: 0;
background: #000 url(https://images.unsplash.com/photo-1466657718950-8f9346c04f8f?dpr=1&auto=format&fit=crop&w=800&h=800&q=80&cs=tinysrgb) no-repeat center center;
background-size: cover;
width: 100%;
height: 100%;
z-index: 1;
opacity: .5;
mix-blend-mode: screen;
}
.c-graidient__title {
position: relative;
z-index: 10;
text-transform: uppercase;
letter-spacing: .05em;
}
.c-graidient:hover {
background-position: 100% 100%;
}
.c-graidient:hover__title {
text-shadow: 0 0 20px black;
}<a class="c-graidient">
<div class="c-graidient__img"></div>
<h2 class="c-graidient__title">Gradient Hover Effect</h2>
</a>