body {
    background-color: whitesmoke;
}

#container {
    margin: 10%;
}

#image-wrapper {
    text-align: center;
    margin-bottom: 30px;
}

#introduce-image {
    width: 300px;
    height: 300px;
}

#introduce-intro {
    margin: 30px 30px 60px 30px;
    text-align: center;
}

.introduce-description {
    margin: 5px 0 5px 0;
}

#experiment-table {
    width: 90%;
    margin: 5%;
    border-collapse: collapse;
    border-left: 0;
    border-right: 0;
}

td {
    padding: 10px 5px 10px 5px;
    border-left: 0;
    border-right: 0;
    text-align: center;
}

.left-header {
    background-color: whitesmoke;
}

th {
    padding: 10px 5px 10px 5px;
    border-left: 0;
    border-right: 0;
    background-color: indianred;
}

.maintitle {
    margin: 0 0 0 0;
    padding: 10px;
    color: white;
    background-color: #404040;
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
    text-align: center;
}

.subtitle {
    color: #404040;
}

li {
    margin: 5px 0 5px 0;
}

a {
    text-decoration: none;
    font-weight: bold;
}

a:hover, a:visited {
    color: indianred;
}

div {
    font-size: 18px;
}

/*모바일*/
@media screen and (max-width: 768px) {

    .introduce-description {
        font-size : 14px;
        font-weight: bold;
    }

    #introduce-image {
        width: 40%;
        height: 40%;
    }

    div {
        font-size: 14px;
    }

    h2 {
        font-size: 18px;
    }

    li {
        margin: 2px 0 2px 0;
    }

    #container {
        margin: 3% 3% 10% 3%;
    }

    th {
        padding: 5px 2px 5px 2px;
        border-left: 0;
        border-right: 0;
        background-color: dodgerblue;

    }

    td {
        padding: 5px 2px 5px 2px;
        border-left: 0;
        border-right: 0;
        text-align: center;
    }

    a:hover, a:visited {
        color: dodgerblue;
    }

    .maintitle {
        margin: 0 0 0 0;
        padding: 5px;
        font-size: 16px;
        width: 100%;
        position: fixed;
        bottom: 0;
        left: 0;
        text-align: center;
    }
}