*{
    margin: 0;
    padding: 0;
}

#commpany{
    width: 100%;
    margin-bottom: 90px;
}
.commpany_center{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.commpany_center h1{
    width: 100%;
    text-align: center;
    background: url(../img/advantage/commpany_title.png) no-repeat center center;
    margin-top: 100px;
    margin-bottom: 80px;
    font-size: 30px;
    color: #333;
}
.commpany_center p{
    text-indent:2em;
    line-height: 30px;
    font-size: 18px;
    letter-spacing: 2px;
    margin-bottom: 50px;
}

#about_serve{
    background-color: #fafafa;
}
.about_serve_center{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 110px 0;
}
.about_serve_center div{
    width: 25%;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    color: #333;
    /* font-style: italic; */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-right: 1px solid #ddd;
}
.about_serve_center div:last-child{
    border-right: none;
}
.about_serve_center div img{
    transition: all 0.5s;
}
.about_serve_center div img:hover{
    transform: rotate(360deg);
    cursor: pointer;
}

/**发展历程*/
#develop{
    padding-top: 100px;
    background: url(../img/advantage/develop_bg.jpg) no-repeat center bottom;
}
.develop_center{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.develop_center h1{
    text-align: center;
    width: 100%;
    background: url(../img/advantage/develop_title.png) no-repeat center center;
    margin-bottom: 80px;
    font-size: 30px;
    color: #333;
}
.develop_center img{
    margin-bottom: 150px;
    width: 100%;
}