#container {
    height: 30em;
    width: 30em;
    background-color: lightgray;
    border-radius: 5px;
}

body {
    margin: auto;
    font-family: 'Lato', sans-serif;
    color: #4A4A4A;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    padding: 0;
}

form {
    width: 350px;
    height: 100%;
    margin: auto;
    padding-top: 30%;
}

form .form-field::before {
    font-size: 20px;
    position: absolute;
    left: 15px;
    top: 17px;
    color: #888888;
    content: " ";
    display: block;
    background-size: cover;
    background-repeat: no-repeat;
}

form .form-field {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
}

form input {
    font-family: inherit;
    width: 100%;
    outline: none;
    background-color: #fff;
    border-radius: 4px;
    border: none;
    display: block;
    padding-left: 0;
    padding-right: 0;
    padding-top: 0.7rem;
    padding-bottom: 0.7rem;
    box-shadow: 0px 3px 6px rgba(0, 0, 0, 0.16);
    font-size: 17px;
    color: #4A4A4A;
    text-indent: 40px;
}

form .btn {
    outline: none;
    border: none;
    cursor: pointer;
    display: inline-block;
    margin: 0 auto;
    padding: 0.9rem 2.5rem;
    text-align: center;
    background-color: #47AB11;
    color: #fff;
    border-radius: 4px;
    box-shadow: 0px 3px 6px rgba(0, 0, 0, 0.16);
    font-size: 17px;
}