Center absolute container inside another container with CSS - html

Question

Actually i have this (this screenshot is from other html where i don't need to center the image)
And i need something like this
but i cant position the play button and h3 text "inside" the image... i hope you can help me
.imgContainer {
width: 100%;
height: auto;
}
.imgContainer .botonPlay {
position: absolute;
display: block;
}
.imgContainer .botonPlay img {
margin-left: 10px;
width: 70px;
height: 65px;
}
.imgContainer h3 {
position: relative;
font-family: Roboto;
font-style: normal;
font-weight: normal;
font-size: 50px;
color: #FFFFFF;
text-shadow: 3px 1px 0px #000000;
top: 0px;
padding-left: 10px;
}
.imgContainer #imagenPeli {
display: block;
margin: auto;
}
<div class="imgContainer">
<div class="botonPlay">
<a href="ver.html">
<h3>JOKER</h3>
<img src="https://puu.sh/EwYad/148efdef71.png" alt="">
</a>
</div>
<img id="imagenPeli" src="https://puu.sh/EwFra/20b0f2b018.png" class="img-fluid" alt="...">
</div>

Answer 1

To position the h3 and paly button on the center of the image you can use the following css:
.imgContainer {
width: fit-content;
height: auto;
position: relative;
}
.imgContainer .botonPlay {
position: absolute;
display: flex;
top: 0;
right: 0;
bottom: 0;
left: 0;
align-items: center;
justify-content: center;
}
.imgContainer .botonPlay img {
margin: 0 auto;
width: 70px;
height: 65px;
display: block;
}
.imgContainer h3 {
position: relative;
font-family: Roboto;
font-style: normal;
font-weight: normal;
font-size: 50px;
color: #FFFFFF;
text-shadow: 3px 1px 0px #000000;
top: 0px;
padding-left: 10px;
}
.imgContainer #imagenPeli {
display: block;
margin: auto;
width: 100%;
}
<div class="imgContainer">
<div class="botonPlay">
<a href="ver.html">
<h3>JOKER</h3>
<img src="https://puu.sh/EwYad/148efdef71.png" alt="">
</a>
</div>
<img id="imagenPeli" src="https://puu.sh/EwFra/20b0f2b018.png" class="img-fluid" alt="...">
</div>