.rbt-btn {
    padding: 0 26px;
    background: #ff5a5f;
    height: 60px;
    line-height: 60px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    display: inline-block;
    border-radius: 6px;
    border: none;
    transition: all .4s ease-in-out;
}

.rbt-btn:hover {
    background: #f98b88;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.rbt-btn.btn-gradient {
    background-image: linear-gradient(
        to right,
        #ff5a5f,
        #f98b88,
        #f98b88,
        #ff5a5f
    );
    background-size: 300% 100%;
}

.rbt-btn.btn-gradient:hover {
    background-position: 100% 0;
}