*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
body {

    min-height: 100vh;
    background: url("background.jpg") no-repeat;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 99;
    background: #162938;
}
.logo{
    font-size: 2em;
    color: #ffffff;
    user-select: none;
}
.navigation a {
    position: relative;
    font-size: 1.3em;
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    margin-left: 40px;
}
.navigation a::after{
    content: '';
    position:absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 3px;
    background: #ffffff;
    border-radius: 5px;
    transform-origin: right;
    transform: scaleX(0);
    transition: transform .5s;
}
.navigation a:hover::after{
    transform-origin: left;
    transform: scaleX(1);
}

.wrapper {
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%,50%);
    width: 400px;
    height: 500px;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, .5);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    box-shadow: 0 0 30px rgba(0,0,0, .5);
    display: flex;
    justify-content: center;
    align-items: center;
}
.wrapper .form-box{
    width: 100%;
    padding: 40px;
}
.form-box h2 {
    font-size: 2em;
    color: #162938;
    text-align: center;
}
.input-box {
    position: relative;
    width: 100%;
    height: 50px;
    border-bottom: 2px solid #162938;
    margin: 30px 0;
}
.input-box label {
    position: absolute;
    top: 50%;
    left: 5px;
    transform: translateY(-50%);
    font-size: 1em;
    color: #162938;
    font-weight: 500;
    pointer-events: none;
    transition: .5s;
}
.input-box input:focus~label,
.input-box input:valid~label {
    top: -5px;
}
.input-box input {
    width: 100%;
    height: 100%;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1em;
    color: #162938;
    font-weight: 600;
    padding: 0 35px 0 5px;
}
.btn{
    position: relative;
    top: 15px;
    width: 100%;
    height: 45px;
    background: #162938;
    border: none;
    outline: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    color: #fff;
    font-weight: 500;
}
.output h2 {
    text-align: center;
}