.register-button {
    background: #377DFf;
    border-radius: 15px;
    text-align: center;
    /*width: 15em;*/
    position: relative;
    margin-top: 4px;
    margin-bottom: 4px;
    padding: 5px 5px;
    color: #fff;
    display: inline-block; 
    text-decoration: none;
}