* {
margin:0;
padding:0;
}
#context {
width:300px;
height:50px;
line-height:50px;
border:3px solid blue;
text-align:center;
position:relative;
z-index:10px;
}
img {
position:absolute;
width:100%;
height:100%;
}
button {
position:relative;
z-index:10px;
width:100px;
height:50px;
margin-top:10px;
}