<div class="container">
   <div class="header__video">
    <a href="">
      <img class="header__video_img" 
           src= "https://i.postimg.cc/RZkdzpVW/video.png" alt="">
    </a>
  </div>
</div>

.container {
	max-width: 700px;
	margin: 0 auto;
}
.header__video {
	position: relative;
	border: 1px solid transparent;
	transition: all 0.6s ease 0s;
	cursor: pointer;
	border-radius: 5px;
	.header__video_img {
		border-radius: 5px;
	}
	&:before {
		content: '';
		display: block;
		width: 100%;
		height: 100%;
		position: absolute;
		top: 0;
		left: 0;
		z-index: 1;
		background-color: #fff;
		opacity: 0.9;
		border-radius: 5px;
	}
  &:after {
			content: '';
    
			position: absolute;
			z-index: 3;
			top: 0;
			left: 0;
			bottom: 0;
			right: 0;
			background: url('https://i.postimg.cc/4N82j19c/icon-play.png') center / auto no-repeat;
      opacity: 0;
    transition: all 0.6s ease 0s;
		}
	&:hover {
		border: 1px solid #000;
    &:after {
      opacity: 1;
    }
	}
}