@import url('https://fonts.googleapis.com/css2?family=Redressed&family=Roboto+Serif:wght@100;500&family=Muli&display=swap');

*{
    box-sizing: border-box;
}

body{
    background-color: steelblue;
    color: #fff;
    font-family: 'Muli' sans-serif;
    display:flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height:100vh;
    overflow:hidden;
    margin:0;
}
.container{
    background-color: rgba(0, 0, 0, 0.4);
    padding:20px 40px;
    border-radius: 5px;
}

.container h1{
    text-align: center;
    margin-bottom: 30px;
}

.container a {
    text-decoration: none;
    color:lightblue;
}

.btn{
    cursor: pointer;
    display: inline-block;
    width:100%;
    background:lightblue;
    padding: 15px;
    font-family: inherit;
    font-size:16px;
    border:0;
    border-radius: 5px;
}

.btn.focus{
    outline:0;
}
.btn:active{
    transform :scale(0.98);
}
.text{
    margin-top:30px;
}

.form-control{
    position: relative;
    margin:20px 0 40px;
    width:300px
}

.form-control input{
    background-color: transparent;
    border:0;
    border-bottom: 2px #fff solid;
    display: block;
    width:100%;
    padding:15px 0;
    font-size:18px;
    color:#fff;
}

.form-control input:focus, 
.form-control input:valid{
    outline:0;
border-bottom-color:lightblue;
}

.form-control label{
    position: absolute;
    top:15px;
    left:0;
}

.form-control label span{
    display: inline-block;
    font-size: 18px;
    min-width: 5px;
    transition: 0.3s cubic-bezier(0.68,-0.55,0.26,1.55);   
}

.form-control input:focus + label span,
.form-control input:valid + label span{
    color:lightblue;
    transform:translateY(-30px);
}