body{
    background: rgb(248, 192, 87);
}

#wrapper {
    height: 580px;
    width: 800px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -290px;
    margin-left: -350px;
    background: pink;
    border: 4px solid gray;
    border-radius: 10px;
    
}

#screen {
    position: relative;
    top:23px;
    left: 23px;
    width: 710px;
    height: 120px;
    border: 3px solid gray;
    border-radius: 20px;
    font-size: 70px;
    color:rgb(158, 25, 65);
    font-family: monospace;
    padding: 0px 15px;
}

#keyinBlock {
    position: relative;
    top:46px;
    left: 23px;
    width: 650px;
    height: 300px;
    border-radius: 30px;
}

.row {
    position: relative;
    width: 750px;
    height: 60px;
    border-radius: 30px;
}

.row ~ .row {
    margin-top:20px;;
}

.btn {
    position: relative;
    width: 150px;
    height: 60px;
    border: 3px solid gray;
    border-radius: 30px;
    background: rgb(170, 231, 231);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 40px;
    font-family: monospace;
    color:rgb(158, 25, 65);
    margin-left: 30px;
}

.btn:hover {
    position: relative;
    width: 150px;
    height: 60px;
    border: 4px solid gray;
    border-radius: 30px;
    background:#00CCCC;
    font-size: 45px;
    font-weight: bold;
    font-family: monospace;
}

.btn ~ .btn {
    margin-left: 25.5px;
}

.btn.toRight {
    margin-left: 385px;
}

.btn.big {
    width: 328px;
    background: orange;
    color:pink;
}

.btn.big:hover {
    width: 328px;
    background: orangered;
    color:pink;
}