.button{
                background-color:#169fe6;
                color:white;
                padding:5px 20px;
                max-width: 300px;
                line-height:1.5em;
                text-align:center;
                margin:5px auto;
            }
            .button a{ color:white;}
            .refs{ display:block; margin:auto; text-align:left; max-width:500px; }
            .refs .label{  font-size:1.4em;}
            .refs > ul{ margin-top:10px; line-height:1.5em;}