<div class="wrapper">
<div class="videng">Click here to watch video</div>
<input id="_1" type="checkbox">
<label class="drop" for="_1">Watch here </label>
<div class="run">

<video width="660" height="410" scrolling="no" controls >
<source src="videos/speaking/l2_snow.mp4" />
</video>

</div>
</div>

.collapse{
cursor: pointer;
display: block;
background: #999;
}
.collapse + input{
display: none;
}
.collapse + input + div{
display:none;
}
.collapse + input:checked + div{
display:block;
}

.wrapper {
border:1px solid #999;
padding: 2px;
width:100%;
 }