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

body {
    min-height: 100vh;
    background: url(./assets/cartoon-background.jpg);
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 357px;
    border-radius: 7px;
    background-color: coral;
    padding: 47px 30px;
}

.display {
    margin-bottom: 23px;
    background-color: #3b3b4f;
    height: 55px;
    color: #fff;
    font-size: 40px;
    padding: 14px;
    text-align: end;
    border-radius: 7px;
}

.key-operators {
    display: flex;
}

.operators {
    width: 25%;
}

.operators:first-child {
    border-radius: 7px 0 0 0;
}

.operators:last-child {
    border-radius: 0 7px 0 0;
}

.operators:focus{
    background-color: #d3d3d5;
}

.key-numbers {
    display: flex;
    flex-wrap: wrap;
    width: 75%;
}

.key-numbers button {
    width: calc(100% / 3);
}

.key-numbers button:nth-last-child(3) {
    border-radius: 0 0 0 7px;
}

.box-numbers-equal {
    display: flex;
}

button {
    height: 50px;
    border: 0.5px solid #d3d3d5;
    font-size: 20px;
    cursor: pointer;
}

button:hover {
    background-color: #d3d3d5;
    transition: all 0.2s ease-in-out;
}

#equal-sign {
    height: 200px;
    width: 25%;
    border-radius: 0 0 7px 0;
}