Ghost/ghost/admin/app/styles/layouts/flow.css

/* Full screen workflow
/* ---------------------------------------------------------- */

.gh-flow {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    min-height: 100%;
    background: linear-gradient(315deg,#efefef,#fff);
}

.gh-setup {
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: unset;
    overflow-y: unset;
    padding: 0 2.4rem;
}

.gh-flow-content-wrap {
    flex-grow: 1;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 5%;
    padding-bottom: 8vh;
}

.gh-flow-content {
    display: flex;
    flex-direction: column;
    max-width: 520px;
    width: 100%;
    margin: 4.8rem 0 8rem;
    color: var(--darkgrey);
    font-size: 1.9rem;
    line-height: 1.5em;
    font-weight: 300;
}

@media (max-width: 400px) {
    .gh-flow-content {
        margin: 4rem 0 6rem;
        font-size: 4vw;
    }
}

.gh-setup .gh-flow-content header {
    margin: 0 0 1rem;
    text-align: center;
}

.gh-setup .gh-flow-content header svg {
    width: 7.2rem;
    margin: 0 0 1rem;
}

.gh-setup .gh-flow-content h1 {
    margin-bottom: .3em;
}

.gh-setup .gh-flow-content p {
    color: var(--midgrey);
    font-size: 1.9rem;
    font-weight: 400;
    line-height: 1.4em;
}

@media (max-width: 520px) {
    .gh-setup .gh-flow-content p {
        font-size: 1.7rem;
    }
}

.gh-flow-content h1 {
    margin-bottom: 40px;
    font-size: 4.1rem;
    font-weight: 700;
    line-height: 1.15em;
}

@media (max-width: 600px) {
    .gh-flow-content h1 {
        font-size: 7vw;
    }
}

.gh-flow-content strong {
    font-weight: 400;
}

.gh-flow-content em {
    color: var(--black);
    font-weight: 500;
    font-style: normal;
}

.gh-flow-content .gh-btn {
    display: block;
    margin: 40px auto 0;
    max-width: 400px;
}

.gh-setup .gh-flow-content .gh-btn {
    height: 52px;
    max-width: unset;
    margin: 40px 0 0
}

.gh-setup .gh-flow-content .gh-btn span {
    font-size: 1.7rem;
}

.gh-flow-content .login span {
    height: 37px !important;
    line-height: 37px !important;
}

.gh-flow-content .gh-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.gh-separator {
    display: flex;
    align-items: center;
    text-align: center;
    margin-top: 25px;
    margin-bottom: 25px;
    font-size: 1.4rem;
    font-weight: 400;
    text-transform: uppercase;
}

.gh-separator::before,
.gh-separator::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--lightgrey);
}

.gh-separator:not(:empty)::before {
  margin-right: 6px;
}

.gh-separator:not(:empty)::after {
  margin-left: 6px;
}

.gh-flow-content .gh-flow-skip {
    display: inline-block;
    margin-top: 5px;
    color: #7d878a;
    font-size: 1.2rem;
}

.gh-flow-content .gh-flow-create {
    position: relative;
    margin: 70px auto 30px;
    padding: 50px 40px 40px;
    max-width: 400px;
    width: 100%;
    border: #dae1e3 1px solid;
    background: #fff;
    border-radius: 5px;
    text-align: left;
    box-shadow: 0 20px 45px -10px rgba(0, 0, 0, 0.1);
}

.gh-flow-content .form-group {
    margin-bottom: 20px !important;
}

.gh-flow-content .form-group label {
    margin: 0 0 .3em;
    font-size: 1.4rem;
    font-weight: 600;
}

.gh-flow-content .form-group a {
    text-decoration: underline;
}

.gh-flow-content input {
    height: 48px;
    padding: 12px 16px;
    font-size: 1.7rem;
    font-weight: 400;
    border-radius: 8px;
    letter-spacing: -0.013em;
}

.gh-flow-content .gh-input:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(26,170,96,.15);
    outline: none;
}

.gh-flow-content .pw-strength {
    position: absolute;
    top: 50%;
    right: 1px;
    margin-top: -11px;
    padding: 0 10px;
    height: 24px;
    background: rgba(255, 255, 255, 0.9);
}

.gh-flow-content .pw-strength-dot {
    display: block;
    margin-top: 2px;
    width: 3px;
    height: 3px;
    background-color: #d9e0e3;
    border-radius: 100%;
}

.gh-flow-content .pw-strength-dot:first-child {
    margin-top: 0;
}

.gh-flow-content textarea {
    width: 100%;
    height: 160px;
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1.8rem;
}

.gh-flow-content .response,
.gh-setup .gh-flow-content .response {
    position: absolute;
    right: 0;
    bottom: -24px;
    margin: 0;
    color: #a6b0b3;
    font-size: 1.35rem;
}

.gh-flow-content form:not(.gh-signin) .success .gh-input-icon svg {
    fill: var(--green);
}

.error,
.error-content,
.main-error {
    user-select: text;
    font-weight: 400;
}

.gh-flow-content .error input,
.gh-flow-content .error input:focus {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(239,24,24,.15);
}

.gh-flow-content .error .gh-input-icon svg {
    fill: var(--red);
}

.gh-flow-content .error .response,
.gh-setup .gh-flow-content .error .response {
    color: var(--red);
}

.gh-flow-content .main-error,
.gh-setup .gh-flow-content .main-error {
    margin-top: 8px;
    color: var(--midgrey);
    font-size: 1.35rem;
    text-align: center;
}

.gh-setup .gh-flow-form .gh-btn-red,
.gh-setup .gh-flow-form .gh-btn-red:active {
    background: var(--black) !important;
}