*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.calculator{
    background: #f2f0E6;
    padding: 20px;
    margin: 0 auto;
    margin-top: 40px;
    max-width: 400px;
    border-radius: 10px;
    box-shadow: 0 3px 5px rgba(0, 0, 0, .4);
    
}

#result{
    border: 0;
    outline: none;
    width: 100%;
    padding: 10px;
    border-radius: 2px;
    font-size: 24px;
    box-shadow: 0 3px 5px rgba(0, 0, 0, .3) inset;
    margin-bottom: 20px;

}
.buttons{
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 10px;
}
button{
    padding: 10px;
    border: none;
    background-color: #f0ffff;
    border-radius: 4px;
    box-shadow: 0 3px 2px rgba(0, 0, 0, .2);
    font-size: 24px;
    transition: background-color 0.3s ease;
    cursor: pointer;
    transition: all 0.3s;

}
button:hover{
    
    color: #00308f;
    
}
button:active{
    transform: scale(0.9);
    background-color: #ffe4c4;

}
.clear{
    background-color: #ff7e00;
}
.clear:hover{
    background-color: #ff033e;
}
.operator{
    background-color: #007fff;
}
.operator:hover{
    background-color: #3f00ff;
}
.equals{
    background-color: #00ad43;
    grid-row: span 3;
}
.equals:hover{
    background-color: #46cb18;
}