body{
        background: gray;
    }
    .borderline{
        width: 400px;
        margin-left: auto;
        margin-right: auto;
        margin-top: 150px;
        border: 1px solid black;
        padding: 5px 5px 15px 5px;

    }
    #show{
        background: rgb(85, 119, 85);
        width: 400px;
        height: 50px;
        margin-bottom: 5px;
    }
    button{
        width: 96px;
        height: 40px;
        margin-top: 10px;
    }
    #num{
        line-height: 65px;
        text-align: right;
        font-size: 24px;
    }
    #countResult{
        line-height: 65px;
        text-align: right;
        font-size: 24px;
    }