body {
    margin: 0;
}

header {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgb(209, 209, 209);
}

.border {
    border: 10px solid #5f5f5f;
    border-radius: 40px;
    width: 350px;
}

.result {
    height: 200px;
    width: 100%;
    border-bottom: 2px solid black;
    background-color: #000;
    border-top-left-radius: 30px;
    border-top-right-radius: 30px;
    position: relative
}

.result input {
    position: absolute;
    width: 300px;
    right: 20px;
    bottom: 0;
    color: white;
    background-color: black;
    border: none;
    font-size: 50px;
    font-family: sans-serif;
}

.result input:focus {
    outline: none;
    box-shadow: none;
}

.buttons {
    display: flex;
    justify-content: space-around;
    background-color: black;
    padding-bottom: 10px;
    border-radius: 30px;
}

.wrap {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: center;
    background-color: black;
    border-bottom-left-radius: 30px;
    border-bottom-right-radius: 30px;
}

button {
    border-radius: 50%;
    width: 75px;
    height: 75px;
    box-shadow: none;
    border: 2px solid #000;
    cursor: pointer;
    gap: 10px;
    color: #fff;
    font-size: 22px;
    background-color: #2F2F2F;
}

.operator {
    background-color: orange;
}

.top {
    background-color: #5B5B5B;
}