body{
    font-family: sans-serif;
}
#wrapper{
    max-width: 960px;
    padding: 0 20px;
    margin: 0 auto;
}
div{
    margin-bottom: 20px;
}
a.btn{
    position: relative;
    display: inline-block;
    margin: 0 20px;
    z-index: 3;
    color: rgba(0, 0, 0, 1);
    font-weight: bold;
    text-decoration: none;
}
a.btn:before{
    position: absolute;
    left: -10px;
    display: block;
    content: "";
    height: 10px;
    background-color: rgba(220, 30 ,40, 0.8);
    width: 0;
    z-index: -1;
    top: 10px;
    transition: all 0.2s ease;
}
a.btn:hover:before{
    width: 100%;
    transition: all 0.2s ease;
}
#generator{
    margin-bottom: 80px;
}
.left{
    float: left;
}
.right{
    float: right;
}
.half{
    width: 50%;
}
.clear{
    clear: both;
}