body {
    font-weight: bold;
    background: linear-gradient(135deg, #e0c3fc, #8ec5fc);
    font-family: "Helvetica", "Arial", sans-serif;
    background-repeat: no-repeat;
    background-size: cover; 
    height: 200vh; /* Sets the body's height to the full viewport height */

}
/* positioning the calculator */
.allocation-center {
    display: flex;
    justify-content: center;
    align-items: center;
    position: sticky;
    top: 200px;
}

/* calculator design */
.calculator {
    border: 3px solid rgb(0, 0, 0);
    width: 350px;
    height: 350px;
    display: flex;
    justify-content: center;
    align-items: center;
 
    border-radius: 10px;
    background-color:  #00000025;
    background-size: cover;
    box-shadow: 5px 5px 20px rgba(0, 0, 0, 0.8);
 
}

/* button design */
td button {
   
    background-color: rgba(255, 255, 255, 0.5);
    color: rgb(0, 0, 0);
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    height: 35px;
    width: 55px;
    margin: 9px;
    border: 1px solid black;
    border-radius: 10px
}

button:hover {
    
    border:1px solid linear-gradient(135deg, #e0c3fc, #8ec5fc);
    background: linear-gradient(135deg,  #0b223a,  #e0c3fc);
    color: rgba(255, 255, 255, 0.822);
}

/* backspace button */
.button1 {
    background-color: rgba(255, 255, 255, 0.5);
    color: rgb(0, 0, 0);
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    height: 35px;
    width: 50px;
    border-radius: 10px;   
    border: 1px solid black;
    
}

input {
   
    background-color: rgba(255, 255, 255, 0.5);
    width: 215px;
    margin-bottom: 20px;
    margin-left: 10px;
    margin-right: 15px;
    height: 35px;
    border-radius: 10px;
    border: none;
}
input:hover{
    border: 2px solid rgb(0, 0, 0);
}

/* title */
div h1{
    font-size: 60px;
    text-shadow: 5px 5px 7px  rgb(151, 134, 134);
    position: fixed;
   
}

.title{
    display: flex;
    justify-content: center;
    

}