header {
    text-align: center;
    height: 125px;
    width: 100%;
}
.right {
    height: 750px;
    width: 50%;
    float: right;
}
.left {
    height: 750px;
    width: 50%;
    float: left;
}
footer {
    text-align: right;
    height: 25px;
    width: 100%;
    clear: both;
}
body {
    background-color: beige;
}
.bialykwadrat {
    width: 300px;
    height: 320px;
    border-color: gray;
    border-style: solid;
    border-width: thin;
    padding: 3px;
    text-align: center;
    background-color: white;
    border-radius: 25px;
}
h2 {
    text-align: center;
    color: gray;
    font-weight: bold;
    font-size: 20px;
}
h3 {
    text-align: center;
    color: gray;
    font-weight: bold;
    font-size: 20px;
}
.wprowadz {
    background-color: beige;
    border-color: gray;
    border-style: solid;
    border-width: 1px;
    margin-bottom: 7.5px;
    border-radius: 5px;
    width: 80%;
    height: 25px;
}
.wysrodkowanie {
    display: flex;
    justify-content: center;
    text-align: center;
}

input[type=button]{
    background-color: #dbe2df;
    border-style: solid;
    border-width: 1px;
    border-color: #b7bfbf;
    border-radius: 5px;
    height: 25px;
    margin-bottom: 5px;
    margin-right: 1px;
}
.bialykwadrat1 {
    width: 450px;
    height: 320px;
    border-color: gray;
    border-style: solid;
    border-width: thin;
    padding: 3px;
    text-align: center;
    background-color: white;
    border-radius: 25px;
}