#kalk1{
    width: 400px;
    height: 120px;
    border: 1pt solid grey;
    border-radius: 10px;
    background-color: blue;
}

#kalk2{
    width: 400px;
    height: 113px;
    border: 1pt solid grey;
    border-radius: 10px;
    background-color: rgba(0, 0, 0, 0.73);

}

#kalk3{
    width: 400px;
    height: 113px;
    border: 1pt solid grey;
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.53);

}

input[type="number"] {
    width: 100px;
    height: 20px;
    border: 1px solid #ccc;
    background-color: #f7f7f7;
    color: #333;
    appearance: none;
    text-align: center;
}

input[type="number"]:focus,
input[type="number"]:hover {
    border: 1px solid #999;
}