I have a modal image and I want the mouse to be placed in a blue with an opacity I try but the code does not work here
<main>
<div class="container">
<!-- seccion portafolio-->
<div class="row portafolio">
<div class="col">
<h2 class="titulo">Portafolio</h2>
<div class="row galeria justify-content-center">
<div class="contenedor-imagen col-6 col-lg-4">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-1.jpg" class="img-fluid imagen" alt="">
</a>
</div>
<div class="contenedor-imagen col-12 col-lg-8">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-2.jpg" class="img-fluid imagen" alt="">
</a>
</div>
<div class="contenedor-imagen col-12 col-lg-8">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-3.jpg" class="img-fluid imagen" alt="">
</a>
</div>
<div class="contenedor-imagen col-12 col-lg-4">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-4.jpg" class="img-fluid imagen" alt="">
</a>
</div>
<div class="contenedor-imagen col-6 col-lg-4">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-5.jpg" class="img-fluid imagen" alt="">
</a>
</div>
<div class="contenedor-imagen col-6 col-lg-4">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-6.jpg" class="img-fluid imagen" alt="">
</a>
</div>
<div class="contenedor-imagen col-6 col-lg-4">
<a href="#" data-toggle="modal" data-target="#modal">
<img src="Imagenes/img-7.jpg" class="img-fluid imagen" alt="">
</a>
</div>
</div>
</div>
</div>
</div>
</main>
and the css code
.portafolio {
background: #fff;
border-top: 5px solid #3da5e2;
padding: 0 20px;
margin-bottom: 40px;
}
.portafolio .titulo {
padding: 40px 0;
text-align: center;
color: #3da5e2;
font-family: 'Open Sans', sans-serif;
}
.portafolio .galeria .contenedor-imagen {
margin-bottom: 40px;
max-height: 180px;
overflow: hidden;
}
.portafolio .galeria .contendor-imagen a {
display: inline-block;
background: #3da5e2;
}
.portafolio .galeria .contendor-imagen:hover img {
opacity: 0.3;
}