style.css

body {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-image: url("./Image/wp7153325.jpg");
    background-size: cover ;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    font-family: 'Poppins', sans-serif;
}

.Heading {
    margin-top: 2%;
    background-color: rgba(0, 0, 0, 0.7);
    width: 50%;
    padding: 3% 0% 3% 0%;
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.Form-Details {
    padding-top: 1.5%;
    width: 50%;
    background-color: rgba(0, 0, 0, 0.5);
    margin-bottom: 2%;
    padding-bottom: 1.5%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.Form-Details label input {
    height: 20px;
    font-size: 15px;
    border: none;
}

.Input {
    outline: none;
    width: 100%;
    margin-bottom: 2%;
    margin-top: 1.5%;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 1% 2% 1% 2%;
    font-size: 18px;
}

.button {
    width: 100%;
    text-align: center;
    padding-top: 2%;
    padding-bottom: 2%;
    font-size: 18px;
    font-weight: 800;
    border: 2px solid white;
}

.button:hover {
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.7);
    transition: 0.4s;
    border-color: black;
}

.Form-Details label {
    display: block;
    margin-bottom: 1%;
}

.Form-Details label input[type="radio"],
.Form-Details label input[type="checkbox"] {
    display: inline;
    margin: 0 2%;
}

.Form-Details select {
    width: 100%;
    height: 35px;
    padding: 1% 2% 1% 2%;
    font-size: 18px;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    outline: none;
}