.container-app {
    display: none;
}

.c-title {
    width: 1240px;
    height: 80px;
    justify-content: center;
    align-items: center;
    color: #000;
    font-weight: bold;
    font-size: 26px;
    display: flex;
    letter-spacing: 2px;
}

.c-sub-title {
    width: 1240px;
    height: 40px;
    justify-content: center;
    align-items: center;
    color: #7b7b7b;
    font-weight: bold;
    font-size: 13px;
    display: flex;
    flex-direction: row;
    letter-spacing: 2px;
}
.c-s-t-d {
    width: auto;
    height: 40px;
    margin-left: 20px;
    justify-content: center;
    align-items: center;
    color: #7b7b7b;
    font-weight: bold;
    font-size: 13px;
    display: flex;
    letter-spacing: 2px;
}

.c-content {
    width: 1200px;
    min-height: 400px;
    height: auto;
    /* font-family: Arial, Helvetica, sans-serif; */
    margin: 20px auto 0px auto;
    color: #000;
    font-size: 15px;
    letter-spacing: 2px;
}

.c-content p {
    margin: 0px 10px 0px 10px;
    line-height: 36px;
}

.c-content .i-title {
    font-size: 16px;
    font-weight: bold;
}

.c-content .i-msg {
    text-indent: 2rem;
}

.c-image {
    width: 700px;
    height: 400px;
    margin: 20px auto 40px auto;
    border-radius: 20px;
    background-image: url(../images/introduce.jpg);
    background-size: cover;
}

.c-image-flow {
    width: 900px;
    height: 800px;
    margin: 20px auto 40px auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.c-image-flow img {
    width: 100%;
    height: 100%;
    margin: 0px;
    padding: 0px;
}