style.css

*{
    box-sizing: border-box;
    font-family: monospace;
    margin: 0px;
}

h4{
    color: #817825;
    position: absolute;
    left: 645px;
    top: 28px;
}

.container{
    height: 600px;
    width: 350px;
    background-color: #292626;
    margin-left: 520px;
    margin-top: 25px;
    border-radius: 20px;
    box-shadow: rgba(142, 142, 165, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px, rgba(10, 37, 64, 0.35) 0px -2px 6px 0px inset;
}

#screen{
    height: 120px;
    text-align: center;
    width: 350px;
    font-size: xx-large;
    font-weight:bolder;
    margin-top: 20px;
    background-color: white;
    border: none;
      color: rgb(185, 34, 127);
    cursor:alias
}

.symbol{
    position:absolute;
    left: 545px;
    margin-top: 50px;
}

input{
    height: 60px;
    width: 70px;
    border-radius: 50px;
    background-color: #292626;
    border: none;
    border: #292626 ridge;
    margin-top: 5px;
    box-shadow: rgba(93, 97, 99, 0.12) 0px 2px 4px 0px, rgba(90, 96, 99, 0.32) 0px 2px 16px 0px;
    font-size: xx-large;
    font-weight:bolder;
    cursor: pointer;
}
input:active{
    height: 59px;
    width: 69px;
    margin-left: 1px;
}

.btn-equal{
    height: 120px;
    border-radius: 30px;
    position: absolute;
    top:263px;
    left: 230px;
    background-color: rgb(165, 41, 64);
    color:wheat; 
}
.btn-equal:active{
    height: 119px;
    width: 68px;
}

.btn-operator{
      background-color: rgb(87, 48, 124);
}

.btn-reset{
    color: wheat;
    background-color: rgb(112, 45, 109);
}

.btn-other{
    background-color: rgb(29, 43, 65);
}

.btn-top{
    color: rgb(64, 216, 64);
    background-color: #292626;
    padding: 2px;
    border: #292626 ridge;
    border-radius: 5px;
    cursor: pointer;
}
.btn-top:active{
    padding: 1px;
    margin: 1px;
}

.container-btn-top{
    position: absolute;
    top: 180px;
    left: 583px;
}

/*added class after togglebtn clicked*/
.cont{
   background-color: white;
}
.scrn{
    background-color: white;
}