.style4 {
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 100%;
}

#tips {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    z-index: -1;
}

.text-content {
    bottom: 60px;
    width: 100%;
    align-items: center;
    justify-content: center;
    align-content: center;
    color: #fff;
    position: absolute;
}

.style4 .down-btn {
    display: block;
    margin: 0 auto;
    width: 65%;
    height: 44px;
    line-height: 44px;
    font-size: 16px;
    border-radius: 3px;
    background-color: #fff;
    color: black;
    text-align: center;
    margin-top: 200px;
}