*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    background-color: steelblue;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}
.container{
    background-color: rgba(0, 0, 0, 0.4);
    padding: 20px 40px;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    -ms-border-radius: 5px;
    -o-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-color: lightblue;
    padding: 15px;
    font-size: 16px;
    border: 0;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    -ms-border-radius: 5px;
    -o-border-radius: 5px;
}
.btn:focus{
    outline: 0;
}
.btn:active{
    transform: scale(0.98);
    -webkit-transform: scale(0.98);
    -moz-transform: scale(0.98);
    -ms-transform: scale(0.98);
    -o-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, 0.265, 1.55) ;
    -webkit-transition:0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55) ;
    -moz-transition:0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55) ;
    -ms-transition:0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55) ;
    -o-transition:0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55) ;
}
.form_control input:focus + label span{
    color: lightblue;
    transform: translateY(-30px);
    -webkit-transform: translateY(-30px);
    -moz-transform: translateY(-30px);
    -ms-transform: translateY(-30px);
    -o-transform: translateY(-30px);
}