.box p{
    line-height: 30px;
}
.title-weight{
    font-weight: 700;
}
.jumbotron{
    background: url("https://gsp-fujiniya.oss-us-east-1.aliyuncs.com/home/banner.jpg") no-repeat;
    background-size: auto 100%;
    background-position: center;
    margin-bottom: 0 !important;
}
.about-sign__in {
    position: relative;
    padding: 8px 12px;
    line-height: 14px;
    text-align: center;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    background: linear-gradient(90deg, #03a9f4, #f441a5, #ffeb3b, #03a9f4);
    background-size: 400%;
    border-radius: 60px;
    margin-top: 12px;
}

.about-sign__in:hover {
    animation: animate 8s linear infinite;
}

@keyframes animate {
    0% {
        background-position: 0%;
    }

    100% {
        background-position: 400%;
    }
}

.about-sign__in::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    z-index: -1;
    background: linear-gradient(90deg, #03a9f4, #f441a5, #ffeb3b, #03a9f4);
    background-size: 400%;
    border-radius: 40px;
    opacity: 0;
    transition: 0.5s;
}

.about-sign__in:hover::before {
    filter: blur(20px);
    opacity: 1;
    animation: animate 8s linear infinite;
}