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

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.Calculator {
    width: 300px;
    height: 500px;
    box-shadow: 4px 4px 30px black;
    border-radius: 10px;
    background-color: black;
    overflow: hidden;
}

form input {
    width: 100%;
    height: 150px;
    border-radius: 10px;
    background-color: black;
    text-align: right;
    color: white;
    padding: 1rem;
    font-size: 2rem;
    pointer-events: none;
}

.buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 23px;
}

button {
    margin: 5px 0;
    flex: 0 0 22%;
    border: 1px solid black;
    width: 60px;
    height: 52px;
    font-size: 22px;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
}
.btn-yellow{
    background-color: rgb(208, 120, 19);
}
.btn-gray{
    background-color: gray;
}
.btn-equal{
    background-color: green;
}
.btn-clear{
    background-color: red;
}