.main-grid {
    display: grid;
    grid-template-columns: [start] 3% [left-border] 1fr [right-border] 3% [end];
    grid-template-rows: [top] auto auto auto auto [bottom];
    grid-template-areas: 
        ". logo ."
        ". uname-input ."
        ". pw-input ."
        ". submit-button .";
    grid-place-items: center center;
    grid-column-gap: 1em;
    grid-row-gap: 1em;
    
    width: 100%;
    height: 100%;
}

.logo {
    grid-area: logo;
    text-align: center;
}

.logo img {
    object-fit: contain;
    min-height: 6em;
    max-height: 10em;
    width: 100%;
    height: auto;
}

.uname-desc {
    grid-area: uname-desc;
    vertical-align:middle;
    text-align:right;
}

.uname-desc span {
    font-size: 2em;
    color: #646d74;
}

.uname-input {
    grid-area: uname-input;
    margin-left: auto;
    margin-right: auto;
}

.uname-input-input {
    width: 35em;
}

.uname-input-input .prepend {
    width: 8rem;
    text-align: right;
}

.uname-input input:focus {
    background-color:lightgreen;
}

.pw-desc {
    grid-area: pw-desc;
    vertical-align: middle;
    text-align: right;
}

.pw-desc span {
    font-size: 2em;
    color: #646d74;
}

.pw-input {
    grid-area: pw-input;
    margin-left: auto;
    margin-right: auto;
}

.pw-input-input {
    width: 35em;
}

.pw-input-input .prepend {
    width: 8rem;
    text-align: right;
}

.pw-input input:focus {
    background-color:lightgreen;
}

.submit-button {
    grid-area: submit-button;
    text-align:center;
}

.submit-button button {
    border-radius: 9px;
    background-color: #4285F4;
    height: auto;
    font-size: 3em;
    font-weight: bold;
    padding: 0.2em 3em;
    letter-spacing: 0.1em;
}

.login-failed {
    grid-area: login-failed;
    text-align:center;
}

.login-failed span {
    color:red;
    font-size:2em;
    font-weight:bold;
}