#kalk1, #kalk2, #kalk3{
    width: 400px;
    border: 1pt lightskyblue;
    border-radius: 15px;
    background-color: beige ;
}
    input[type="number"] {
        width: 35px;
        height: 30px;
        border: 1px solid #ccc;
        border-radius: 15px;
        background-color: #f7f7f7;
        color: #333;
        appearance: none;
        text-align: center;
        padding: 1% ;
    }
input[type="button"] {
    width: 80px;
    height: 30px;
    border: 1px lightgray solid;
    border-radius: 15px;
    background-color: #f7f7f7;
    color: #333;
    appearance: none;
    text-align: center;
    padding: 1%;
}
    input[type="number"]:focus,
    input[type="number"]:hover {
        border: 1px solid #999;
    }