@import url('https://fonts.googleapis.com/css2?family=Outfit&display=swap');

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

body{
    min-height: 100vh;
    background: #efeff2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calculator{
    width: 300px;
    height: 510px;
    box-shadow: 4px 4px 30px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    overflow: hidden;
    background: #22252d;
    padding: 0 10px 10px 10px;
}

form input{
    width: 100%;
    height: 150px;
    border: none;
    background: #000;
    border-radius: 10px;
    text-align: right;
    color: #fff;
    font-size: 2em;
    padding: 0.5em;
    pointer-events: none;
}

.buttons{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding-top: 10px;
}

button{
    flex: 0 0 22%;
    margin: 5px 0;
    border: 1px solid #000;
    width: 60px;
    height: 52px;
    font-size: 22px;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    color: #fff;
}

.btn-blue{
    background: rgb(62, 202, 245);
    color: #000;
}

.btn-gray{
    background: rgb(170, 170, 170);
}

.equal{
    background: rgb(4, 206, 4);
    padding: 0 6.3em;
}

.clear{
    background: red;
}
.design{
    padding: 5px;
}

p{
    height: 20px;
    width: 20px;
    background: #000;
    display: inline-block;
    border-radius: 50%;
}

.red{
    background: rgba(255, 0, 0, 0.644);
}

.yellow{
    background: rgba(255, 255, 0, 0.651);
}

.green{
    background: rgba(0, 128, 0, 0.63);
}

span{
    float: right;
    color: #fff;
    text-align: center;
    font-family: 'Outfit', cursive;
}