body{
background: white;    
}

a:link, a:visited {
    text-decoration: none;
}

a:hover, a:active {
    text-decoration: none;
}
    
#box{
    height: 600px;
    width: 782px;
    margin: auto;
    margin-top: 30px;
    position: relative;
    background-color: black;
    overflow: hidden;
    background-repeat: no-repeat;
}


#wordings{
    position: absolute;
    background-color:rgba(255,255,255,0.8);
    color:black;
    font-size: 24;
    font-family: 'Ubuntu Condensed', sans-serif;
    text-align: center;
    border: 4px solid grey;
    width: 100%;
    height: 150px;
    top:450px;
    padding: 40px;
    box-sizing: border-box;
    cursor: pointer;
    font-family: Microsoft JhengHei,Times;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}


#b1,#b2{
    font-family: Microsoft JhengHei,Times;
    font-size: 20px;
    margin-top: 220px;
    margin-bottom: -200px;
    text-align: center;
    position: relative;
    padding: 10px;
    cursor: pointer;
    z-index: 10;
    position:relative;
    background-color:rgba(255,255,255,0.6);
    color: black;
    display:none;
}


.noselect {
  -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
     -khtml-user-select: none; /* Konqueror HTML */
       -moz-user-select: none; /* Firefox */
        -ms-user-select: none; /* Internet Explorer/Edge */
            user-select: none;  
}