.step {
    position: relative;
    width: 1000px;
    height: 700px;
    padding: 30px;
    margin: 20px auto;

    -webkit-box-sizing: border-box;
    -moz-box-sizing:    border-box;
    -ms-box-sizing:     border-box;
    -o-box-sizing:      border-box;
    box-sizing:         border-box;

    font-family: "AR PL UMing TW";
    font-size: 60px;
    line-height: 1.5;
}

.plot0 {
    display: block;


    background-color: #a69e86;
    border: 1px solid rgba(0, 0, 0, .3);
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .1);

    color: rgb(102, 102, 102);
    text-shadow: 0 2px 2px rgba(0, 0, 0, .1);

    font-size: 40px;
    line-height: 36px;
    letter-spacing: -1px;
}

.plot0 > div.section_title {
    color: #000000;
}

.plot1 {
    display: block;


    background-color: #1a2740;
    border: 1px solid rgba(0, 0, 0, .3);
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .1);

    color: rgb(102, 102, 102);
    text-shadow: 0 2px 2px rgba(0, 0, 0, .1);

    font-size: 40px;
    line-height: 34px;
    letter-spacing: -1px;
}

.plot1 > div.section_title {
    color: #ffffff;
}

.plot_mid {
    display: block;


    background-color: #637173;
    border: 1px solid rgba(0, 0, 0, .3);
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .1);

    color: rgb(102, 102, 102);
    text-shadow: 0 2px 2px rgba(0, 0, 0, .1);

    font-size: 40px;
    line-height: 36px;
    letter-spacing: -1px;
}

.plot_mid > div.section_title {
    color: #dddddd;
}


.cover {
    display: block;

    background-color: white;
    border: 1px solid rgba(0, 0, 0, .3);
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .1);

    color: rgb(102, 102, 102);
    text-shadow: 0 2px 2px rgba(0, 0, 0, .1);

    font-size: 40px;
    line-height: 36px;
    letter-spacing: -1px;
    background: url("../imgs/cover.jpg") no-repeat;
}

.library {
    background: url("../imgs/library.jpg") no-repeat;
}

.library2 {
    background: url("../imgs/library2.jpg") no-repeat;
}

.restaurant {
    background: url("../imgs/restaurant.jpg") no-repeat;
}

.cover > div.title {
    height: 60px;
    color: #ffffff;
    margin-top: 280px;
    text-align: center;
    font-size: 80px;
    font-weight: bold;
}

.cover > div.subtitle {
    font-family: "STHeiti";
    color: #eeeeee;
}

.section_title {
    top: 10px;
}

.hidden {
    opacity: 0;
}

.slide_content {
    position: absolute; 
    top: 12%; 
    width: 940px;
    height: 84%;
    font-family: "STHeiti";
    font-size: 40px;
    color: #ffffff;
    line-height: 50px;
}

.slide_content .line {
    display: block;
    margin: 50px;
}