Ghost/ghost/admin/assets/sass/layouts/error.scss

//
// Error Pages
// --------------------------------------------------
// Slug: /ghost/404
// --------------------------------------------------
// Covers styles for all error screens, eg. 404, 500

.error-content {
    max-width: 530px;
    margin: 0 auto;
    padding: 0;
    display: table;
    height: 100%;

    @media (max-width: 630px) {
        max-width: 264px;
        text-align: center;
    }
}

.error-details {
    display: table-cell;
    vertical-align: middle;
}

.error-image {
    display: inline-block;
    vertical-align: middle;
    width: 96px;
    height: 150px;

    @media (max-width: 630px) {
        width: 72px;
        height: 112px;
    }

    img {
        width: 100%;
        height: 100%;
    }
}

.error-message {
    position: relative;
    top: -5px;
    display: inline-block;
    vertical-align: middle;
    margin-left: 10px;
}

.error-code {
    margin: 0;
    font-size: 7.8em;
    line-height: 0.9em;
    color: #979797;

    @media (max-width: 630px) {
        font-size: 5.8em;
    }
}

.error-description {
    margin: 0;
    padding: 0;
    font-weight: 300;
    font-size: 1.9em;
    color: #979797;
    border: none;

    @media (max-width: 630px) {
        font-size: 1.4em;
    }
}

.error-stack {
    margin: 1em auto;
    padding: 2em;
    max-width: 800px;
    background-color: rgba(255,255,255,0.3);
}

.error-stack-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.error-stack-list li {
    display: block;

    &::before {
        color: #BBB;
        content: "\21AA";
        display: inline-block;
        font-size: 1.2em;
        margin-right: 0.5em;
    }
}

.error-stack-function {
    font-weight: bold;
}