@charset "utf-8";

.titleimg {
    display: flex;
    background-image: url("../image/bkg.png");
    height: 100vh;
    background-repeat: no-repeat;
    background-size: 1540px;
    background-attachment: fixed;
    width: 100vw;
    transition: 0.5s ease 0s;
    animation: load 0.5s;
}

.titleimg .title {
    margin-left: -60px;
    /* 向右偏移 50px */
    margin-top: 140px;
    /* 向下偏移 20px */
}


.titleimg .title {
    width: 1540px;
    padding: 200px;
    font-size: 75px;
    font-weight: 550;
    color: rgba(255, 255, 255, 0.9);
}

.main {
    scroll-snap-type: y mandatory;
    overflow: scroll;
    overflow-x: hidden;
    height: 100vh;
}

.sec {
    height: 100vh;
    width: 100vw;
    scroll-snap-align: start;
}

.pt {
    display: flex;
    flex-direction: column;
    height: 500px;
    width: 250px;
    float: left;
    margin: 150px 0px 0px 105px;
    background: rgba(219, 235, 241, 0.8);
    box-shadow: 0 0 15px rgb(59, 73, 95);
    border-radius: 15px;
    overflow: hidden;
    scroll-snap-align: start;
    transition: all 0.5s ease 0s;
}

.pt:hover {
    cursor: pointer;
    transform: scale(1.05);
}

.imghid {
    overflow: hidden;
}

.part1 .img {
    background-image: url("../image/about.jpg");
}

.part2 .img {
    background-image: url("../image/edu.jpg");
}

.part3 .img {
    background-image: url("../image/photo6.jpg");
}

.part4 .img {
    background-image: url("../image/contact.jpg");
}

.pt .img {
    height: 190px;
    width: 250px;
    background-size: cover;
    background-position: 0px -30px;
    transition: all 0.5s ease 0s;
    opacity: 0.8;
}

.pt .img:hover {
    transform: scale(1.1);
}

.pt .txt {
    height: 310px;
    width: 240px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    margin: auto;

}

.pt .txt h1 {
    text-align: center;
    font-size: 3em;
    color: rgb(28, 44, 68);
    height: 30px;
    line-height: 30px;
}

.pt .txt p {
    margin-top: -2px;
    word-wrap: break-word;
    color: rgb(114, 182, 202);
}

@keyframes load {
    0% {
        background-position-y: 50px;
        opacity: 0;
    }

    100% {
        background-position-y: 0px;
        opacity: 1;
    }
}