.cloud-banner {
    position: relative;
    min-width: 1200px;
    background: #0af url(../img/cloud-back.jpg) no-repeat center;
    height: 180px;
    overflow: hidden;
    color: #fff;
    text-align: center;
}

.cloud-bubble-one {
    position: absolute;
    top: -120px;
    left: 50%;
    z-index: 10;
    margin-left: -120px;
    width: 240px;
    height: 240px;
    background: url(../img/cloud-back-bule1.png);
    animation: bubble-animate-1 linear 10s infinite;
}

.cloud-bubble-two {
    position: absolute;
    top: 50px;
    left: 34%;
    z-index: 11;
    width: 360px;
    height: 360px;
    background: url(../img/cloud-back-bule2.png);
    animation: bubble-animate-2 linear 12s infinite;
}

.cloud-bubble-three {
    position: absolute;
    top: 50px;
    left: 48%;
    z-index: 12;
    width: 300px;
    height: 300px;
    background: url(../img/cloud-back-bule3.png);
    animation: bubble-animate-3 linear 11s infinite;
}

@keyframes bubble-animate-1 {
    from {
        top: -120px
    }

    50% {
        top: -180px
    }

    to {
        top: -120px
    }
}

@keyframes bubble-animate-2 {
    from {
        top: 50px;
        left: 34%
    }

    50% {
        top: 80px;
        left: 24%
    }

    to {
        top: 50px;
        left: 34%
    }
}

@keyframes bubble-animate-3 {
    from {
        top: 50px;
        left: 48%
    }

    50% {
        top: 80px;
        left: 58%
    }

    to {
        top: 50px;
        left: 48%
    }
}

.cloud-bubble-text {
    position: relative;
    padding-top: 46px;
    z-index: 20;
    font-size: 24px;
}

.cloud-bubble-link {
    position: relative;
    z-index: 20;
}

.cloud-bubble-link a {
    display: inline-block;
    margin-top: 24px;
    width: 220px;
    height: 44px;
    line-height: 44px;
    border: 1px solid #fff;
    color: #fff;
}

.cloud-bubble-link a:hover {
    color: #333;
    background-color: #fff;
}