style-calculator.css

@import url('https://fonts.googleapis.com/css2?family=Comforter&family=Roboto+Slab:wght@800&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
   font-family: 'Comforter', cursive;
   font-family: 'Roboto Slab', serif;
}
body
{
    background-image: url(932271.jpg);
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.container
{
    position: relative;
    background-color: rgba(255,255,255,0.05);
    border-radius: 6px;
    overflow: hidden;
    z-index: 10;
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255,255,255,0.2);
    border-left: 1px solid rgba(255,255,255,0.2);
    box-shadow: 5px 5px 30px rgba(0,0,0,0.05);
}
.container .calculator{
    position: relative;
    /*position x to y using grid*/
    display: grid;

}
.container .calculator .value{
    grid-column: span 4;/*4*4 matrix form*/
    height: 140px;
    width: 300px;
    text-align: right;
    border: none;
    outline: none;
    padding: 10px;
    font-size: 40px;
    background: transparent;
    color: rgb(255, 254, 254);
    border-bottom:1px solid rgba(255,255,255,0.05);
    border-right: 1px solid rgba(255,255,255,0.05);

}
.container .calculator span{
    display: grid;
    place-items: center;
    width: 75px;
    height: 75px;
    font-weight: 400;
    cursor: pointer;
    font-size: 20px;
    user-select: none;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    border-right: 1px solid rgba(255,255,255,0.05);
    transition: 0.5s;
}
.container .calculator span:hover{
    transition: 0s;
   
    background: rgba(255,255,255,0.05);
}
.container .calculator span:active{
   
    background: rgb(89, 255, 47);
    color: #192f00;
    font-size: 24px;
    font-weight: 500px;
}
.container .calculator .clear{
    grid-column: span 2;
    width: 150px;
    background: rgba(255,255,255,0.05);
}
.container .calculator .plus{
    grid-row: span 2;
    height: 150px;
}
.container .calculator .equal{
    background: rgba(255,255,255,0.05);
}