body{
margin: 0;
padding: 0;
}
.placeholder{
background: grey;
height: 60px;
width: 140px;
position:relative;
}
#kotak{
position: absolute;
left:-140px;
top:0;
width: 140px;
height: 60px;
background: purple;
z-index:1;
}
a{
z-index:10;
color: blue;
padding: 20px;
width: 100%;
display: inline-block;
position:relative;
}
see the updated fiddle. the one is fixed