calculator.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
    letter-spacing: 2px;
}

html{
    font-size: 52%;
    scroll-behavior: smooth;
}

.calculator h1{
    text-align: center;
    font-size: 3rem;
    border: 2px solid #000;
    border-top:none ;
    border-radius: 20px/50px 40px 90px;
    box-shadow:  0 0 12px rgba(12,12,12,99);
    background: rgba(122, 86, 89, 0.133);
    display: block;
    margin-top: 0;
    padding: 12px;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    font-weight: 700;
    color:#ac93;
    text-decoration: none;
    letter-spacing: 5px;
    transition: all 0.5s ease-in-out;

    &:hover{
        color:rgb(141, 104, 104);
    }
}

body{
    min-height: 100vh;
    max-width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background:linear-gradient(45deg,#0a0a0a,#3a4452);
    position: relative;
}

h1{
    text-decoration: underline;
    color:rgba(255, 255, 0,0.5);
    align-items: start;
    top:0;
}


.calculator{
    padding:15px;
    box-shadow: 0 0 15px #000;
    border: 2px solid rgb(116,114,114);
    border-radius: 2rem;
}

.display input{
    background: transparent;
    width: 360px;
   border: none;
   outline:none;
   height:100%;
   padding:2rem;
   margin:10px;
   caret-color: #cd8282;
   color:aliceblue;
   border-bottom: 2px solid #fff;
   font-size: 40px;
   text-align: right;
   cursor:pointer;
   & ::placeholder{
    color:#fff;
   }
}

button{
    width: 8rem;
    height: 8rem;
    border-radius:50%;
    /* background-color: rgba(166,124,0,0.9); */
    border:0.1rem solid #3a4452;
    margin:15px;
    padding: 0.4rem;
    text-align: center;
    font-size: 25px;
    font-weight: 400;
    border: 0;
    /* box-shadow: -5px -6px 15px #0a0a0a; */
    background: transparent;
    color:white;
    outline: 2px solid #313131;
    outline-offset: 3px;
    cursor: pointer;

    &:active{
        background-color: #000;
        transform: translate(2px,2px);
    }
    
    &.opr{
        color:#000;
        background-color: rgba(166,124,0,0.9);
        font-weight: 700;
    }
}

#equals{
    background-color: rgb(151, 31, 31);
    font-weight: 500;
}