@import url('https://fonts.cdnfonts.com/css/ds-digital');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    background-color: whitesmoke;
    padding: 40px 0;
    cursor: pointer;
}

.calculator {
    width: 400px;
    margin: 0 auto;
    background-color: #3f4555;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 15px black;
}

.display{
    display: flex;
    justify-content: flex-end;
    width: 100%;
    height: 100px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #dae3e5;
    color: black;    
    font-family: 'DS-Digital', sans-serif;
    font-size: 4rem;
    overflow: hidden;
    border-radius: 5px;
}

input {
    border: 0px;
    text-align: right;
}

.calculator-buttons{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-gap: 10px;
}

.calculator button{
    background-color: #676a75;
    color: white;
    padding: 20px;
    border-radius: 5px;
    font-size: 1.5rem;
    outline: none;
    cursor: pointer;
    border: 2px solid #676a75;
}

button:hover{
    background-color: #dae3e5;
    color: black;
}

#color {
    background-color: #3f4555;
    border: none;
}