.left-btn{
    margin-top: -40px;
    padding-top: 10px;
    padding-right: 2px;
}
.right-btn {
    position: relative;
    float: right;
    bottom: 149px;
    padding-top: 10px;
    padding-left: 2px;
}

.right-btn,
.left-btn {
    font-family: "slick";
    font-size: 20px;
    line-height: 1;
    color: #ffffff;
    opacity: 1 !important;
    -webkit-font-smoothing: antialiased;
    background-color: #d9d9d9;
    text-align: center;
    width: 20px;
    height: 40px;

}

.left-btn::before {
    content: "<";
}

.left-btn::before,
.right-btn::before {
    font-family: simsun;
    font-weight: 900;
}

.right-btn::before {
    content: ">";
}

.probg {
    /* margin: 5px; */
    height: 182px;
    position: relative;
    max-width: 175px;
    box-sizing: border-box;

}

/* .vcenter {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    max-width: 100%;
    max-height: 100%;
    display: block;
    vertical-align: middle;
    margin: auto;
} */

.rest-btn {
    background: #2491e2 !important;
}