body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-image: url('bg.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top right;
}
.container{
    width: 300px;
    padding: 40px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: transparent;
    text-align: center;
}
.container h1{
    color: #fff;
    font-size: 35px;
    font-weight: 500;
    text-transform: uppercase;
    display: inline-block;
    border-bottom: 2px solid rgb(23, 179, 69);
    padding: 5px;  
}
span{
    color: rgb(23, 179, 69);
}
.user{
    position: relative;
}
.user input{
    border: none;
    background: none;
    outline: none;
    margin: 10px auto;
    padding: 10px 20px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    transition: .10s;
    border-bottom: 2px solid rgb(23, 179, 69);
}
.user input:focus{
    border-bottom: 2px solid rgba(23, 179, 70, 0.54);
}
.fas{
    color:rgb(23, 179, 69);
    font-size: 16px;
    position: absolute;
    top: 10px;
    left: 15px;
    padding: 10px;
}
.submit input{
    padding: 10px 40px;
    margin: 15px auto;
    color: #fff;
    background: none;
    outline: none;
    border: none;
    border: 2px solid rgb(23, 179, 69);
    border-radius: 25px;
    cursor: pointer;
    transition: .3s;
}
.submit input:hover{
    background-color: rgb(23, 179, 69);
}
@media only screen and (max-width: 600px) {
    body{
        background: #130f40;
    }
}