Style.Css

*{
    margin: 0;
    padding: 0;
}
body{
    background-image: url(Images/1.jpg);
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
    margin:auto;
}
table{
    text-align: center;
    margin: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid black;
    border-radius: 5px;
    padding: 10px 30px;
    background: rgba(255, 255, 255,0.8) ;
}
table tr td input[type=button]{
    width: 85%;
    padding: 18px 22px;
    margin: 10px 5px;
    box-sizing: border-box; 
    cursor: pointer;
}
table tr td input[type=button]:hover{
    background-color: rgb(77, 75, 75);
}
table tr td input{
    text-align: center;
    font-weight: bolder;
    font-style: normal;
    font-size: 20px;
    color: white;
    background-color: rgb(134, 134, 134);
    border: 1px solid rgb(134, 134, 134);
    border-radius: 5px;  
}
.Clear{
    width: 98%;
    padding: 18px 22px;
    text-align: center;
    font-weight: bolder;
    font-style: normal;
    color: white;
    background-color: rgb(134, 134, 134);
    border: 1px solid rgb(134, 134, 134);
    border-radius: 5px; 
    cursor: pointer;
}
.Clear:hover{
    background-color: rgb(77, 75, 75);
}
#Display{
    margin-bottom: 5px;
    padding: 15px 22px;
    width:80%;
    font-weight: bolder;
    font-size: 20px;
    color: white;
    background-color: rgb(134, 134, 134);
    border: 1px solid rgb(134, 134, 134);
    border-radius: 5px; 
}