*{
    margin: 0;
    padding: 0;
    font-family: 'Times New Roman', Times, serif;
    box-sizing: border-box;
    user-select: none;
}
.container{
    width: 100%;
    height: 100vh;
     background: linear-gradient(135deg, #ece9ff, #ffffff);
    display: flex;
    align-items: center;
    justify-content: center;
}
.calculator{
    background: #3a4452;
    padding: 20px;
    border-radius: 10px;
  user-select: false;
}
.calculator form input{
    border: 0;
    outline: 0;
    width: 60px;
    height: 60px;
    border-radius: 5px;
    background: transparent;
    font-size: 20px;
    color: white;
    cursor: pointer;
    margin: 10px;
}
.calculator form input[type="button"]{
    transition: 0.2s;
}

.calculator form input[type="button"]:hover{
    transform: translateY(-5px);
    background: #4c5a70;
}

.calculator form input[type="button"]:active{
    transform: scale(0.95);
}
form .display{
    display: flex;
    justify-content: flex-end;
    margin: 20px;
}
form .display input{
    text-align: right;
    flex: 1;
    font-size: 45px;
    box-shadow: none;
    border-radius: 10px;
}
form input.equal{
    width: 145px;
    color: #33ffd8;
    border-radius: 10px;
     background: #fff;
    color: #ED7526;
    box-shadow: -8px -8px 15px rgba(255,255,255,0.1),
                 5px 5px 15px rgba(0,0,0,0.2);
}
form input.operator{
    color: #33ffd8;
    background: #fff;
    color: #ED7526;
    box-shadow: -8px -8px 15px rgba(255,255,255,0.1), 
                 5px 5px 15px rgba(0,0,0,0.2);
}
.calculator form input.operator:hover{
    background: #A3E9DB;
    color: black;
}

.calculator form input.equal:hover{
    background: #A3E9DB;
    color: black;
}