*{
    margin:0;
    padding:0;
    box-sizing: border-box;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}
h1
{
    text-align:center;
    margin-bottom:20px;
    text-transform: uppercase;
    color:#064703;
    font-weight: bold;
}
body{

    height:100vh;
    background: linear-gradient(90deg, #f075ee 0%, #7f92f0 100%);
    display: flex;
    justify-content: center;
    align-items: center;

}

.calculator{
    background: #f2dd58;
    padding: 20px;
    border-radius: 16px;
    width: 350px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

#display{
    width:100%;
    height:60px;
    margin-bottom:15px;
    text-align: right;
    font-size: 26px;
    padding: 10px;
    border-radius: 10px;
    border: none;
    background: #000;
    color:#fff;

}

.buttons{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap:10px;
}
.btn{
    padding:10px;
    font-size: 18px;
    border:none;
    border-radius: 8px;
    background: #393e46;
    color:#fff;
    transition:0.2s;


}
.btn:hover{
    background: #555;
}
.operator{
    background: #e58328;
}
.operator:hover{
    background: #802403;
}
.equal{
    grid-row: span 2;
    background:#004e92;
}
.clear{
    background:#d90429;
}
.clear:hover{
    background:#7a0000;
}
.zero{
    grid-column: span 2;
}