body {
    margin: 0;
    padding: 0;
}
.head_box {
    width: 100%;
    height: 11vh;
    padding: 0;
    background-color: #555555;
    color: #ffffff;
    font-weight: 700;
}
.head_box span {
    font-size: 15px;
}
.head_box h1 {
    font-size: 32px;
    margin: 0 100px;
}
.top_box {
    width: 100%;
    height: 77vh;
    background-image: url("1.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    padding-top: 10vh;
}
.top_box h1 {
    position: relative;
    margin-top: 10vh;
    text-align: center;
    color: #1e73be;
    font-size: 57px;
    font-weight: 700;
}
.top_box h1:after {
    content: "";
    position: absolute;
    left: 62%;
    bottom: 0;
    width: 15%;
    height: 1px;
    margin-left: -20%;
    background-color: #103c89;
}
.top_box h2 {
    color: #1e73be;
    font-size: 30px;
    text-align: center;
    font-weight: 300;
}
.mess_box {
    width: 820px;
    margin: 0 auto;
    background-color: #fff;
    padding: 30px;
}