* {
margin: 0;
padding: 0;
border: 0
}
.container {
margin: 2em
}
.progressBtn {
position: relative;
z-index: 0;
background-color: #c0f400;
font-family: sans-serif;
border: 0;
padding: .5em;
font-size: 1em;
border-radius: 3px;
color: #008000
}
.progressBtn .progress-bar {
position: absolute;
display: block;
z-index: 6;
top: 0;
left: 0;
width: 0;
height: 100%;
background-color: rgba(0,0,0,0.2)
}
.progressBtn .progress-text {
position: absolute;
z-index: 5;
display: none;
top: 0;
left: 0;
padding: .5em;
background-color: #c0f400;
width: 100%;
heigh: 100%;
box-sizing: border-box
}
.progressBtn:hover {
background-color: #b0e000
}
.progressBtn:active {
background-color: #a3cf00
}