.start {
    width: 400px;
    height: 200px;
    margin-top: -100px;
    margin-left: -200px;
    position: absolute;
    top: 50%;
    left: 50%;
}

.start .tag {
    line-height: 62px;
    height: 62px;
    text-align: center;
}

.start .facebook {
    background-color: #4e69a2;
    border-color: #435a8b #3c5488 #334c83;
    text-shadow: 0 -1px 0 rgba(0, 0, 0, .2);
    border: 1px solid;
    -webkit-border-radius: 2px;
    -webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, .05);
    font-family: 'Helvetica Neue', Helvetica, Arial, 'lucida grande',tahoma,verdana,arial,sans-serif;
    -webkit-font-smoothing: antialiased;
    font-weight: bold;
    padding: 20px 10px;
    position: relative;
    text-align: center;
    vertical-align: middle;
    width: 100%;
    display: block;
    margin-top: 20px;
}

.start a.facebook {
    color: #fff;
    text-decoration: none;
}

.start .tagline {
    font-weight: bold;
    text-align: center;
    margin-top: 20px;
}