.jianjie {
    padding: 20px 0;
}

.jianjie-value {
    padding: 40px 0 60px;
    background: url(../images/value-bg.jpg) no-repeat center/cover;
}

.ca-menu {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 0;
}

.ca-menu li {
    width: 20%;
    padding: 0 10px;
    position: relative;
    -webkit-transition: all 300ms linear;
    -moz-transition: all 300ms linear;
    -o-transition: all 300ms linear;
    -ms-transition: all 300ms linear;
    transition: all 300ms linear;
}

.ca-menu li a {
    background: #fff;
    box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    overflow: hidden;
}

.ca-menu li img {
    width: 100%;
}

@media (max-width: 992px) {
    .ca-menu li {
        padding: 0 5px;
    }

}

@media (max-width: 768px) {
    .ca-menu li {
        width: 33.33333%;
        padding: 0 10px;
        margin-bottom: 30px;
    }

    .jianjie .about-image {
        margin: 0 auto 20px;
    }

    .jianjie .about-content {
        width: 100%;
    }
}

@media (max-width: 639px) {}

@media (max-width: 575px) {
    .ca-menu li {
        width: 48%;
    }
}

@media (max-width: 414px) {
    .ca-menu li {
        padding: 0 5px;
    }
}


.ca-menu li a {
    text-align: left;
    width: 100%;
    height: 100%;
    display: block;
    color: #333;
    position: relative;
    text-decoration: none;
}

.ca-icon {
    display: block;
    -webkit-transition: all 400ms linear;
    -moz-transition: all 400ms linear;
    -o-transition: all 400ms linear;
    -ms-transition: all 400ms linear;
    transition: all 400ms linear;
}

.ca-content {
    width: 100%;
    height: 50%;
    padding: 20px 0;
}

.ca-main {
    font-size: 18px;
    font-weight: bold;
    margin: 0 0 16px;
    text-align: center;
    -webkit-transition: all 200ms linear;
    -moz-transition: all 200ms linear;
    -o-transition: all 200ms linear;
    -ms-transition: all 200ms linear;
    transition: all 200ms linear;
}

.ca-sub {
    text-align: center;
    margin: 0;
    font-size: 14px;
    -webkit-transition: all 200ms linear;
    -moz-transition: all 200ms linear;
    -o-transition: all 200ms linear;
    -ms-transition: all 200ms linear;
    transition: all 200ms linear;
}

.ca-menu li:hover {
    /* background-color: #000;
    z-index: 999; */
}

.ca-menu li:hover .ca-icon img {
    -webkit-animation: smallToBig 500ms ease;
    -moz-animation: smallToBig 500ms ease;
    -ms-animation: smallToBig 500m
}

.ca-menu li:hover .ca-main {
    -webkit-animation: smallToBig 300ms ease;
    -moz-animation: smallToBig 300ms ease;
    -ms-animation: smallToBig 300ms ease;
}

.ca-menu li:hover .ca-sub {
    text-decoration: none;
    -webkit-animation: moveFromBottom 500ms ease;
    -moz-animation: moveFromBottom 500ms ease;
    -ms-animation: moveFromBottom 500ms ease;
}

@-webkit-keyframes smallToBig {
    from {
        -webkit-transform: scale(0.1);
    }

    to {
        -webkit-transform: scale(1);
    }
}

@-moz-keyframes smallToBig {
    from {
        -moz-transform: scale(0.1);
    }

    to {
        -moz-transform: scale(1);
    }
}

@-ms-keyframes smallToBig {
    from {
        -ms-transform: scale(0.1);
    }

    to {
        -ms-transform: scale(1);
    }
}

@-webkit-keyframes moveFromBottom {
    from {
        -webkit-transform: translateY(100%);
    }

    to {
        -webkit-transform: translateY(0%);
    }
}

@-moz-keyframes moveFromBottom {
    from {
        -moz-transform: translateY(100%);
    }

    to {
        -moz-transform: translateY(0%);
    }
}

@-ms-keyframes moveFromBottom {
    from {
        -ms-transform: translateY(100%);
    }

    to {
        -ms-transform: translateY(0%);
    }
}