.protocol_pop_box {
    background: rgba(0,0,0,.7);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none
}

.ppb_content {
    width: 80%;
    height: 80%;
    padding: 40px 0;
    border: 1px solid #ccc;
    position: relative;
    background-color: #fff;
    box-sizing: border-box;
    top: 10%;
    left: 10%;
    font-size: 12px;
}

.ppb_text {
    height: 100%;
    overflow-y: scroll;
    box-sizing: border-box;
    padding: 10px;
    margin: 0 10px;
    border: 1px solid #ccc
}

.ppb_text p {
    margin-top: 8px
}

.ppb_close,.ppb_title {
    position: absolute;
    width: 100%;
    height: 40px;
    left: 0;
    line-height: 40px;
    text-align: center
}

.ppb_title {
    top: 0;
    font-size: 16px
}

.ppb_close {
    bottom: 0
}

.ppb_close b {
    display: block;
    width: 50px;
    height: 24px;
    margin: 8px auto 0;
    border: 1px solid #ccc;
    line-height: 24px;
    border-radius: 5px
}