我有以下代码，并为纯色叠加颜色添加了不透明度。问题是文本也在使用不透明度。如何更改它以使文本没有不透明度并位于顶部？
.container {
position: relative;
width: 50%;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
bottom: 100%;
left: 0;
right: 0;
background-color: #008CBA;
opacity: .5;
overflow: hidden;
width: 100%;
height: 0;
transition: .5s ease;
}
.container:hover .overlay {
bottom: 0;
height: 100%;
}
.text {
color: white;
font-size: 20px;
position: absolute;
top: 50%;
left: 50%;
-webkit-transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
text-align: center;
}<div class="container">
<img src="https://cdn.searchenginejournal.com/wp-content/uploads/2019/07/the-essential-guide-to-using-images-legally-online-1520x800.png" class="image">
<div class="overlay"> …