body {
    background-color: #000;
    color: #fff;
    font-family: "ＭＳ ゴシック";
}

#container {
    width: 100%;
    max-width: 800px;
    margin-right: auto;
    margin-left: auto;
}

#start-buttons {
    position: absolute;
    width: 520px;
    left: 0;
    top: 200px;
    text-align: center;
    font-weight: bold;
}

#start-button-1, #go-ranking, .go-links {
    font-weight: bold;
    text-align: center;
    border: none;
    font-size: 20px;
    background-color: #1DA1F2;
    padding: 10px 32px;
    border-radius: 100vh;
    color: white;
    cursor: pointer;
    text-decoration: none;
}

#start-button-1 {
    display: inline;
    margin-top:15px;
    margin-bottom:40px;
}

.display-none {
    display: none;
}

.footer-content a {
    color: #00bfff;
}

.footer-content a:hover {
    color: #f00;
}

#left {
    position: relative;
    overflow: hidden;
    margin-left:0px;
    margin-top:20px;
    float:left;
    width: 520px;
    line-height: 150%;
}
#right {
    margin-left:0px;
    margin-top:20px;
    float:left;
    width:250px;
    line-height: 150%;
}