body {
    background-color: #c8c8c8;
    overflow: hidden;
    padding: 0;
    margin: 0;
    font-family: Lato;
}
.center-box {
    text-align: center;
    position: absolute;
    width: 300px;
    height: 400px;
    margin: -200px 0 0 -150px;
    left: 50%;
    top: 50%;
}
.title {
    font-size: 50px;
}
.button {
    position: absolute;
    width: 100px;
    height: 100px;
    left: 50%;
    top: 50%;
    margin: -100px 0 0 -50px;
    border: 2px solid #666;
    color: #666;
    -moz-border-radius: 15px;
    -webkit-border-radius: 15px;
    border-radius: 15px;
    font-size: 55px;
}
.button .text {
    font-size: 37px;
    padding: 0 10px;
    width: 80px
}
.op {
    position: absolute;
    width: 200px;
    height: 100px;
    left: 50%;
    top: 70%;
    margin: -50px 0 0 -100px;
}