* {
    margin: 0px;
    padding: 0px;
}
body {
    background: url("slide03.jpg") fixed;
    background-size: cover;
}
h1 {
    text-align: center;
}
.card {
    margin: 0 auto;
    max-width: 350px;
    text-align: center;
    margin-top: 10px;
    box-shadow: 0px 4px 8px 0px rgba(0, 0, 0, 0.2);
    transition: 0.3s;
    font-size: 0px;
}
.card:hover {
    box-shadow: 0px 16px 32px 0px rgba(0, 0, 0, 0.2);
}
.calc-head #result {
    height: 100px;
    width: 324px;
    /* width: 335px; */
    font-size: 32px;
    font-weight: bold;
    text-align: right;
    padding: 0px 10px;
    letter-spacing: 2px;
}
.calc-body {
    margin: 0px;
    padding: 0px;
}
.btn {
    width: 87px;
    height: 70px;
    font-weight: bold;
    font-size: 16px;
    background-color: #1f2326;
    color: white;
}
.btn-style {
    background-color: #5F4BB6;
}
.btn:hover {
    background-color: pink;
}