style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    background: url(bg1.jpg);
    background-position: center;
    background-size: cover;
    min-height: 100vh;
    width: 100%;
}
.container{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.form-box{
    position: relative;
    width: 400px;
    height: 550px;
    border: 2px solid rgba(255,255,2550.5);
    border-radius: 20px;
    backdrop-filter: blur(15px);
    display: flex;
    justify-content: center;
    align-items: center;
}
.form-box h2{
    color: #fff;
    text-align: center;
    font-size: 32px;
}
.form-box .input-box{
    position: relative;
    margin: 30px 0;
    width: 310px;
    border-bottom: 2px solid #fff;
}
.form-box .input-box input{
    width: 100%;
    height: 45px;
    background: transparent;
    border: none;
    outline: none;
    padding: 0 20px 0 5px;
    color: #fff;
    font-size: 16px;
}
i{
    position: absolute;
    color: #fff;
    top: 13px;
    right: 0;
}
input::placeholder{
    color: #fff;
}
.btn{
    color: #fff;
    background-color: orangered;
    width: 100%;
    height: 50px;
    border-radius: 5px;
    outline: none;
    border: none;
    font-size: 17px;
    cursor: pointer;
    box-shadow: 3px 0 10px rgba(0,0,0,0.5);
}
.group{
    display: flex;
    justify-content: space-between;
}
.group span a{
    color: #fff;
    position: relative;
    top: 10px;
    text-decoration: none;
    font-weight: 500;
}
.group a:focus{
    text-decoration: underline;
}
#result{
    color: red;
    font-weight: 600;
    position: relative;
    top: 25px;
}
.popup{
    width: 400px;
    background-color: #fff;
    border-radius: 6px;
    position: absolute;
    top:0;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.1);
    transition: transform .4s , top .4s;
    visibility: hidden;
    text-align: center;
    padding: 0 30px 30px;
    height: 330px;
    color: #000;
}
.popup ion-icon{
    color: #00ff00;
    font-size: 50px;
}
.popup button{
    width: 100%;
    background-color: #00ff00;
    padding: 10px 0;
    margin-top: 50px;
    border: none;
    outline: none;
    font-size: 18px;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    box-shadow:0 0 0 2px rgba(0,0,0,0.1);
}
.popup a{
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 2px;
}
.open-slide{
    top:0;
    transform: translate(-50%, -50%) scale(1);
    visibility: visible;
}