* {
    margin: 0;
    padding: 0;
}
h2 {
    font-size: 39px;
    line-height: 2;
}
p {
    font-size: 24px;
}
img {
    align-self: flex-end;
}
#app {
    width: 100%;
    height: 100vh;
    position: relative;
    margin: auto;
}
.box {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.back1 {
    position: relative;
    background-color: #e3e8eb;
    padding-top: 20px;
}
.back1 img {
    align-self: center;
}
.back1 a {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 40px;
    transform: translate(-200%,-15px);
    margin: 0 auto;
    width: 150px;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    color: #000;
    line-height: 2.5;
    background-color: rgb(255, 225, 0);
    border-radius: 5px;
}
.back2 {
    background-color: #e9564a;
    text-align: center;
    display: flex;
    align-items: center;
    flex-direction: row;
    padding-top: 20px;
}
.back2 h2 {
    color: #ffffff;
    font-size: 39px;
}
.back2 p {
    font-size: 24px;
}
.left {
    display: flex;
    margin: 0 35px;
}
.right {
    margin: 0 35px;
}
.back3 {
    background-color: #e3e8eb;
    text-align: center;
    display: flex;
    align-items: center;
    flex-direction: row-reverse;
    padding-top: 20px;
}
.back4 {
    background-color: #fff;
    text-align: center;
    display: flex;
    align-items: center;
    flex-direction: row;
    padding: 150px 0;
}
.back4 .left {
    margin-right: 150px;
}
.back4 .left p {
    position: relative;
    color: #fff;
    background-color: #e9564a;
    padding: 0 15px;
    line-height: 2.1;
    border-radius: 5px;
}
.back4 .left p::after {
    content: "";
    position: absolute;
    right: -15%;
    top: 50%;
    transform: translateY(-50%);
    border-width: 10px;
    border-style: solid;
    border-color: transparent transparent transparent #e9564a;
}
.back4 .right {
    width: 157px;
}
.back4 .right img {
    display: block;
    width: 100%;
}
.bottom-h {
    height: auto;
}
.bottom {
    width: 100%;
    height: 85px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}
.bottom .beian {
    margin-left: 20px;
    cursor: pointer;
}