*:active {
    -webkit-tap-highlight-color: transparent;
}

@supports (--language_in=ECMASCRIPT6_STRICT);
body {
    
    background-color: ivory;
    margin: 0;
    overflow: visible;
}

#butt1 {
    position: fixed;
    right: 0px;
    height: 5px;
    width: 5px;
}
    #butt1.button1 {        
        font-weight: 700;
        font-size: 15px;
        color: white;
        text-decoration: none;
        padding: .8em 1em calc(.8em + 3px);
        border-radius: 3px;
        background: rgb(64,199,129);
        box-shadow: 0 -3px rgb(53,167,110) inset;
        transition: 0.2s;
    }
    #butt1.button1:hover {
        background: rgb(53, 167, 110);
    }
    #butt1.button1:active {
        background: rgb(33,147,90);
        box-shadow: 0 3px rgb(33,147,90) inset;        
    }
/*<a href="rules.html" target="_blank" rel="noopener noreferrer">Bowling rules.</a>*/
/*<a href="rules.html" onclick="openRules(event)">Bowling rules.</a>*/
#butt2 {
    position: fixed;
    right: 50px;
    height: 5px;
    width: 5px;
}
    #butt2.button1 {
        font-weight: 700;
        font-size: 15px;
        color: white;
        text-decoration: none;
        padding: .8em 1em calc(.8em + 3px);
        border-radius: 3px;
        background: rgb(64,199,129);
        box-shadow: 0 -3px rgb(53,167,110) inset;
        transition: 0.2s;
    }
        #butt2.button1:hover {
            background: rgb(53, 167, 110);
        }
        #butt2.button1:active {
            background: rgb(33,147,90);
            box-shadow: 0 3px rgb(33,147,90) inset;            
        }
#ru {
    display:none;
}
#en {
    display: block;
}
h1 {
    text-align: center;
    color: blue;
}
h2 {
    font-weight: normal;
    text-align: center;
    color: green;
}
p {
    /*font-weight: bold;
    font-family: Arial; , Times, serif Arial;*/
    text-align: center;
    font-family: "Times New Roman";
    font-size: 20px;
    font-weight: bold;
    line-height: 20px;
}
ol {
    font-family: "Times New Roman";
    font-size: 18px;
    
    line-height: 25px;
}